Rosshall Academy
S2/3 Chemistry
Extension Tasks
2014-2015
1
Contents
Topic
Page
Energetics
page 3
Atom Bonding
page 4
Forensics
page 5
Earth’s Materials
page 6
Plastics
page 7
Acids and Metals
page 8
2
Energetics
Extension Task 1 – Fire
You have just witnessed your teacher carry out experiments
involving fire. Find out about the fire triangle and what we can do to
control fires.
Extension Task 2 – Catalysts
1) Try to find out at least 3 examples of Catalysts used in real
life, products you use at home and in the chemical industry.
2) Why are they useful/Important?
3) What else can you find out about catalysts?
4) What is an enzyme?
5) Find out 3 examples of enzymes and explain their uses.
Discuss the success criteria with your teacher including how you
have to present your findings. Bring in a picture of an
enzyme/catalyst to make a class collage!
3
Atom Bonding
Extension Task 1 – Atom Models
Try to design and build your own 3D model atom for display in the
classroom using various materials. You should choose a small atom
such as Helium or Lithium to make the task easier and use less
equipment.
Extension Task 2 – Valency
Try to come up with your own rhyme to remember the diatomic
elements and generate a poster detailing these. This should include
the difference between valency of 2, and a diatomic
4
Forensics
Extension Task 1 – Acids and Alkalis
Come up with your own research project title. Carry out research
and present your findings in a suitable manner!
Ideas:
How do acids or alkalis affect our skin?
Are there any real-life scenarios of acids/alkalis being used at crime
scenes?
What kind of pollution do fertilisers contribute to?
Extension Task 2 - Fibres
Come up with your own research project title. Carry out research
and present your findings in a suitable manner!
Ideas:
How do dyes affect fibres?
Can colour be traced back to a specific manufacturer?
Does hair structure differ between mammals?
Do cats and dogs have the same kind of fur?
Can you actually tell the difference?
Are there any other pieces of evidence that can be classed as
foreign body analysis?
Are there any cases in the news that include this type of evidence?
5
Earth’s Materials
Extension Task 1 – Burning Fossil Fuels
Although burning fossil fuels for domestic and industrial needs is
useful and sometimes necessary, it can cause harm to the
environment. Find out, using a variety of sources, what effects
burning fossil fuels has in the environment. You may be asked to
present your findings.
Extension Task 2 – Uses of hydrocarbons
Use a variety of sources to find out how the hydrocarbons obtained
from crude oil are used. You may wish to present your information in
a table. Alkanes are obtained from crude oil by fractional
distillation. Find out where the alkenes come from.
Extension Task 3 – Alcohol Content
Find out the alcohol content in common alcoholic drinks like beer,
wine and spirits.
Find out how the alcohol content in some drinks is increased.
6
Acids and Metals
Extension Task 1 – Acid Rain
Either by research or revision from previous topics answer the
following questions.
1) Name 2 gases that cause acid rain AND the sources of these
gases.
2) Name 3 types of living things damaged by acid rain and give
details. Name 2 non-living things damaged by acid rain and give
some details.
1) Give 3 ways in which acid rain can be reduced.
Discuss the success criteria with your teacher including how you
have to present your findings.
Extension Task 2 – Everyday Neutralisation
Try to find out about everyday situations that involve a
neutralisation reaction. There are many around us and most of us
carry out at least one (or twice!!) a day. Write down examples in your
workbook and explain why it is an example of neutralisation.
Extension Task 3 – Properties of Metals
Choose 4 metals from the list below and find out how their chemical
and physical properties are linked to their uses. You may wish to use
a variety of resources available e.g text-books, evans2chemweb etc.
7
IRON
ALUMINIUM
COPPER
MERCURY
SILVER
GOLD
LEAD
PLATINUM
Extension Task 4 – Properties of Metals
For each of the following metals find out their date of discovery and
their properties; COPPER, GOLD, TIN, SILVER AND IRON.
Extension Task 5 – Extraction of Iron
Iron is more reactive than copper. It is therefore more difficult to
extract it from its ore. Find out how iron is extracted from its ore
in industry.
Extension Task 6 – Corrosion
We are all facing the problem of trying to stop corrosion as so many
of the things we use are made of metal. When trying to prevent
corrosion it is important to keep oxygen and water away from the
surface of the metal. Try to find out what methods are used to
protect metals from corroding.
Extension Task 7 – Alloys
Find out about 3 alloys and present your information in a table with
the following headings: Name of Alloy, Elements Present, Properties
and Uses.
8
Extension Task- Assessment Form/Success Criteria
Scientific
content
Presentation
literacy
skills
References
(GREEN)
Shows full
understanding
using correct
scientific words.
Can explain ideas in
own words. Covers
the entire topic in
depth.
Excellent standard.
Easy to read and
makes good use of
colour, pictures,
labelled diagrams
to explain.
Paragraphs and
sentences used
consistently. Good
spelling, grammar
Bibliography with 2
or more sources.
All diagrams
referenced.
(ORANGE)
Shows some
understanding of
topic. Tries to use
scientific words.
Covers some
aspects of topic in
detail.
(RED)
Limited
understanding. Little
detail/limited
explanations. Copied
words direct from
source
Good standard
contains pictures
and labelled
diagrams.
No labels on pictures
and layout need
improvement.
Paragraphs and
sentences used
most times. Some
spelling and
grammar mistakes.
Bibliography
9
Little structure e.g.
Paragraphs/ sentences
Spelling/grammar
could be improved.
No bibliography/
references given.