Sample Assessment Material - Edexcel

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BTEC
FIRST
Award
APPLICATION
OF
APPLICATION
Award
OF
SCIENCE
SCIENCE
Sample
Assessment
Material
Sample
Assessment
Material
Further copies of this publication are available from:
Edexcel Publications
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NG18 4FN
APPLICATION OF
SCIENCE
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From September 2012
Edexcel BTEC Level 1/Level 2 First Award in Application of Science
Publications code
BF030003
BTEC_AOS_sams1_BF030003_final_v2.indd 1
16/03/2012 10:53
Contents
Introduction
1 Unit 8: Scientific Skills – Sample assessment test
3 Unit 8: Scientific Skills – Sample mark scheme
19 Introduction
The Sample Assessment Materials (SAMs) have been prepared to support the
qualification.
The aim of these materials is to provide learners and centres with a general
impression and flavour of the actual question papers and mark schemes in advance
of the first operational examinations.
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
1
2
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
Write your name here
Surname
Other names
Edexcel BTEC
Level 1/Level 2 First Award
Centre Number
Candidate Number
Application of Science
Unit 8: Scientific Skills
Sample Assessment Material
Time: 1 hour 15 minutes
Paper Reference
1047/4E
You will need a calculator and a ruler.
Total Marks
Instructions
black ink or ball-point pen.
• Use
in the boxes at the top of this page with your name,
• Fill
centre number and candidate number.
all questions.
• Answer
the questions in the spaces provided
• Answer
– there may be more space than you need.
Information
total mark for this paper is 50.
• The
marks for each question are shown in brackets
• The
– use this as a guide as to how much time to spend on each question.
Advice
each question carefully before you start to answer it.
• Read
an eye on the time.
• Keep
to answer every question.
• Try
• Check your answers if you have time at the end.
W42206A
©2012 Pearson Education Ltd.
6/1/2/2
*W42206A0116*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
Turn over
3
Answer ALL the questions.
The ultraviolet (UV) radiation in sunlight can damage the skin. To help protect the skin,
scientists have developed suncreams. Scientists test these products to find out how
well they work.
The effectiveness of a suncream can be measured by its sun protection factor (SPF)
value. The higher the value, the more effective the suncream.
UV-sensitive beads are used to test the effectiveness of suncreams. These beads are
normally white. When they are exposed to UV radiation in sunlight they change colour.
This is because they contain a chemical indicator that detects UV radiation.
More beads will change colour when exposed to more UV light.
some of these beads
have changed colour
white beads
Beads that have not been
exposed to UV in sunlight
Beads that have been
exposed to UV in sunlight
1 Sunil and Sophie are going to carry out an investigation.
They are going to use UV-sensitive beads to test different samples of a brand of
suncream. Each sample has a different SPF value.
This will allow Sunil and Sophie to find out which SPF value suncream is the most
effective at blocking UV radiation from sunlight.
(a) What is the independent variable in their investigation?
(1)
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(b) Give two variables that need to be controlled to make the investigation a fair test.
(2)
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2 . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
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BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(c) UV radiation can be dangerous.
(i) Describe the damage that can occur when your skin is exposed to UV
radiation.
(1)
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(ii) Give one precaution you would need to take when carrying out this
experiment to minimise this risk.
(1)
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(Total for Question 1 = 5 marks)
*W42206A0316*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
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5
Turn over
2 In another investigation you could find out how the amount of suncream used affects
the colour change of the UV-sensitive beads.
(a) Write a hypothesis for how the amount of suncream used affects the colour
change of the UV-sensitive beads.
(2)
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BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(b) Write a plan for this investigation.
(6)
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(Total for Question 2 = 8 marks)
*W42206A0516*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
5
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Turn over
3 Sarah’s heart rate was measured every ten minutes for one hour during a training
session.
The results are shown in the table.
Time in minutes
0
10
20
30
40
50
60
Sarah’s heart rate in
beats per minute
59
71
83
96
109
114
114
(a) Calculate the percentage change in Sarah’s heart rate between 0 and 40 minutes.
(2)
........................................................................................................................ . . . . . . . . . . . . . . . . . . . . . .
(b) Plot a graph of these data.
Use the graph paper below.
(6)
(c) Use your graph to estimate Sarah’s heart rate at 25 minutes.
................................................................
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*W42206A0616*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(1)
beats per minute.
Peter’s heart rate was also measured during the training session.
Both sets of results are shown in the table.
Time in minutes
0
10
20
30
40
50
60
Sarah’s heart rate in
beats per minute
59
71
83
96
109
114
114
Peter’s heart rate in
beats per minute
78
100
118
140
140
139
138
Sarah exercises regularly and Peter doesn’t exercise very often.
(d) Explain how the data shows that Sarah has a higher level of fitness than Peter.
(2)
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(Total for Question 3 = 11 marks)
*W42206A0716*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
7
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Turn over
4 Joe investigated the amount of energy present in foods.
He burned samples of three different types of food (A, B and C).
His method was:
•
place25cm3 of water into a boiling tube and record the temperature
•
weighasampleoffoodandsetlighttoitwithaBunsenburner
•
placetheburningfoodsampleundertheboilingtube
•
stirthewaterbeforemeasuringthefinaltemperature
•
repeattheexperimentforeachfood(A,BandC),withfreshwaterandaclean
boiling tube.
8
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*W42206A0816*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
Here are Joe’s results.
Food type
Weight (g)
A
Temperature change (°C)
1
2
3
4.0
30.5
32.0
31.5
B
2.0
21.3
20.7
20.0
C
2.6
15.9
19.1
20.3
Mean
(a) Calculate an appropriate mean result for each food, to three significant figures.
Write your results in the mean column of the table.
(2)
(b) Explain which food type (A, B or C) gives out the most energy when burned.
(3)
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(Total for Question 4 = 5 marks)
*W42206A0916*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
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Turn over
5 Many chemical reactions give out heat energy.
Anna wanted to find a chemical reaction that released enough heat energy to be
used in a hand warmer.
Anna started by investigating the temperature change in the reaction between zinc
and copper sulfate.
She put some copper sulfate solution into a beaker and recorded its temperature.
She added 0.1 g of zinc powder to the copper sulfate solution and stirred the mixture.
She then recorded the maximum temperature the mixture reached.
Anna repeated the experiment using different masses of zinc powder.
Here are her results.
Mass of zinc powder (g)
Temperature rise (°C)
0.0
0
0.1
5
0.2
9
0.3
11
0.4
19
0.5
23
(a) Anna measured the temperature rise for each mass of zinc once.
Explain one reason why Anna should repeat the experiment.
(2)
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*W42206A01016*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(b) Here is a graph of Anna’s results.
Temperature rise (°C)
25
20
15
10
5
0
0
0.1
0.2
0.3
0.4
0.5
0.6
Mass of Zinc (g)
(i) Anna realised the reading for 0.3 g of zinc was anomalous.
One possible error could have been caused by reading the equipment
incorrectly.
Give two other possible errors that Anna could have made in her experiment
to produce this anomalous result.
(2)
1 . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
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2 . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
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(ii) Describe the trend shown by the graph.
(2)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
(Total for Question 5 = 6 marks)
*W42206A01116*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
11
13
Turn over
6 Anna’s plan is not detailed enough to allow other students to carry out the same
investigation.
(a) Give two pieces of information you would need to know if you were going to
repeat the same investigation.
(2)
1 . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
2 . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
(b) Anna researched the experiment on the internet and discovered that her
temperature rise values were lower than expected.
(i) Give one reason why Anna’s results were lower than expected.
(1)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
(ii) Suggest an improvement to the equipment used that would enable Anna to
collect more accurate results.
(1)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
12
14
*W42206A01216*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(c) To be used in a hand warmer, this reaction would need to produce a temperature
rise above 30 °C.
Anna could change her investigation of the reaction between zinc with copper
sulfate to produce a temperature rise above 30 °C.
Explain two ways she could do this.
(4)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
(Total for Question 6 = 8 marks)
*W42206A01316*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
13
15
Turn over
7 Anna repeated her investigation using magnesium powder instead of zinc powder.
Here is a graph of her results.
40
Magnesium
35
Temperature rise (°C)
30
25
Zinc
20
15
10
5
0
0
0.1
0.2
0.3
0.4
0.5
0.6
Mass of metal (g)
(a) Compare the results for the two reactions that Anna investigated.
(3)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
14
16
*W42206A01416*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
(b) From the results of her investigation, Anna has concluded that the reaction
between magnesium and copper sulfate could be used in a hand warmer.
Two factors that Anna needs to consider are:
•
costandavailabilityofthematerialsusedtomakethehandwarmer
•
safety.
Explain two other factors that Anna needs to consider before making her
decision.
(4)
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . .
(Total for Question 7 = 7 marks)
TOTAL FOR PAPER = 50 MARkS
*W42206A01516*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
15
17
BLAnk PAgE
16
18
*W42206A01616*
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
Unit 8: Scientific Skills – Sample mark
scheme
General marking guidance
•
All candidates must receive the same treatment. Examiners must mark the first
candidate in exactly the same way as they mark the last.
•
Mark schemes should be applied positively. Candidates must be rewarded for what
they have shown they can do rather than penalised for omissions.
•
Examiners should mark according to the mark scheme not according to their
perception of where the grade boundaries may lie.
•
There is no ceiling on achievement. All marks on the mark scheme should be used
appropriately.
•
All the marks on the mark scheme are designed to be awarded. Examiners should
always award full marks if deserved, i.e. if the answer matches the mark scheme.
Examiners should also be prepared to award zero marks if the candidate’s response
is not worthy of credit according to the mark scheme.
•
Where some judgement is required, mark schemes will provide the principles by
which marks will be awarded and exemplification may be limited.
•
When examiners are in doubt regarding the application of the mark scheme to a
candidate’s response, the team leader must be consulted.
•
Crossed out work should be marked UNLESS the candidate has replaced it with an
alternative response.
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
19
Item
Expected answers
Additional guidance
Marks
1 (a)
Suncream SPF
Suncream only is not awarded
any marks
1
1 (b)
Any two of the following:
Accept use the same container
for the beads each time/same
area of exposure.
2
1 (c) (i)
1 (c) (ii)
•
light intensity/distance from
light source (1)
•
number of beads/depth of
beads (1)
•
time of exposure (1)
•
amount of suncream (1)
Any one of the following:
•
Damage to the skin/cells (1)
•
Sunburn from low level doses
(1)
•
Cancer/melanoma from high
level/ongoing doses (1)
1
Any one of the following:
•
Don’t let your skin be directly
exposed to the UV radiation (1)
•
Protect your eyes from
exposure to UV radiation (1)
1
Total mark
20
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
5
Item
Expected answers
Additional guidance
Marks
2 (a)
The larger the amount/volume of
suncream used the less the beads
change colour (1)
Any hypothesis must refer
to:
2
If you double the thickness of the
suncream half as many beads will
change colour (1)
general relationship (1)
quantitative relationship
(1).
Indicative content
2 (b)
•
Equipment.
•
Change volume/thickness/amount of suncream.
•
Keep the same type/SPF factor of suncream/keep same distance
from light source.
•
How many beads change colour in a specific time.
•
Use 3 or more volumes/thickness/amounts of suncream.
•
Tests the hypothesis.
6
Level
0
No rewardable material
1
1-2
Chooses some equipment. Identifies one appropriate variable to control.
Some measurements chosen.
2
3-4
Chooses most relevant equipment. Identifies some relevant variables to
control. Method is ordered logically. Suitable range of measurements
chosen.
3
5-6
Equipment choices are fully relevant to method. Identifies a range of
variables appropriate to control. Method is ordered logically to produce
results of a suitable range and explains how it would test the hypothesis.
Total mark
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
8
21
SECTION B: PROCESSING
Item
Expected answers
Additional guidance
Marks
3 (a)
(50/59) x 100 (1)
Correct answer of 84.74 or
84.7 or 85 will gain full
marks.
2
84.74 or 84.7 or 85 (2)
3 (b)
6
Axes
Correct axes, labels, units (1)
Scale appropriate (1)
Plotting
4 points plotted correctly (1)
All 7 points plotted correctly (2)
Line
Straight line (until 40 minutes) (1)
Curve/plateau (after 40 minutes) (1)
3 (c)
91 (1)
Straight line of best fit for all
data is not awarded any
marks.
Accept 90 or 92.
1
Accept follow through from
candidate’s own graph.
3 (d)
Sarah has a lower initial heart rate than
Peter (1)
2
Sarah’s heart rate increases more slowly
than Peter’s (1)
Total mark
22
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
11
Item
Expected answers
Additional guidance
Marks
4 (a)
Ignoring anomalous result of 15.9 °C for
food C (1)
1 mark for correct mean
results, but failure to exclude
15.9 °C.
2
Calculating mean result to three
significant figures for all three foods (1)
Food A = 31.3 °C
Food B = 20.7 °C
Food C = 19.7 °C
4 (b)
No marks awarded for mean
results if not all to three
significant figures.
2 marks if all correct mean
results given.
An explanation linking the following:
•
a change in the water temperature
indicates how much energy has been
given out as the same amount of
water is being heated (1)
•
need to work out the temperature
change per g/per specified weight of
food (1)
•
confirming the answer is food B with
an accurate calculation (1)
3
Accept didn’t use the same
weight of food (1).
E.g. 10.4 °C per g of food.
Total mark
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
5
23
Item
Expected answers
Additional guidance
Marks
5 (a)
Enables anomalous results to be
identified (1) so that they can be
ignored or repeated (1)
Accept to explore the reliability
of the data (1)
2
5 (b) (i)
Any two from the following:
5 (b) (ii)
•
not stirred properly (1)
•
loss of material during transfer
e.g. spilt some zinc (1)
•
Anna didn’t measure the
temperature at the maximum
temperature rise, e.g. too soon
or too late (1)
2
1 mark for a simple relationship
For example:
2 marks for a correct quantitative
relationship
As the mass of the zinc
increases the temperature rise
increases (1).
2
As the mass of the zinc doubles
the temperature rise
doubles/they are directly
proportional (2).
Total mark
24
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
6
Item
Expected answers
Additional guidance
Marks
6 (a)
Concentration of copper sulfate
solution (1)
Accept concentration of solution.
2
Accept volume of solution.
Volume of copper sulfate solution
(1)
6 (b) (i)
Heat is lost from the beaker (1)
1
6 (b) (ii)
Any one from the following:
1
6 (c)
•
use a polystyrene cup/insulated
beaker (1)
•
put a lid on the
beaker/apparatus (1)
An explanation linking any two of
the following:
•
use a larger mass of metal (1)
as more metal reacting
released more energy (as heat)
(1)
•
use more concentrated copper
sulfate solution (1) as there will
be more copper sulfate particles
to react with the metal so will
release more energy (as heat)
(1)
4
Total mark
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
8
25
Item
Expected answers
Additional guidance
Marks
7 (a)
All three of the following:
Answer can be explained
numerically.
3
7 (b)
•
magnesium produces a higher
temperature rise than zinc/the
results for magnesium are
always higher/the gradient or
slope of the graph is steeper for
magnesium (1)
•
both show a directly
proportional/positive correlation
increase in temperature (1)
•
the temperature rise for a given
mass of magnesium is greater
than for the same mass of zinc
(1)
An explanation linking the
following:
•
reversibility (1) as the hand
warmer can currently only be
used once (1)
•
speed of reaction (1) as it
might not stay warm long
enough/get hot too quickly (1)
•
convenience (1) because the
liquid in the hand warmer might
leak out (1)
4
Total mark
TOTAL FOR THE PAPER
26
BF030003 – SAMs – Edexcel BTEC Level 1/Level 2 First Award in Application of Science –
Issue 1 – March 2012 © Pearson Education Limited 2012
7
50
BTEC
FIRST
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APPLICATION
OF
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SCIENCE
Sample
Assessment
Material
Sample
Assessment
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From September 2012
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