LAB Copper Sulfate Solutions_Stevanus

advertisement
Science 6 @ SWA
Name: Stevanus Adi Darma
To write your lab report you just add in the missing purple sections.
WHAT YOU HAND IN on Tuesday Feb 26:
A lab report with sections A, B, E, F,
G, H, J1, J4, K4
Done for you
Please fill these sections in
LAB: Make a Saturated Solution of Copper Sulfate
(in other words, How much copper sulfate powder can dissolve in 10 mL of water?)
Research Question: How many grams of copper sulfate will dissolve in 10mL of
water? We will answer this by adding a known mass of powder to the water until
no more can dissolve.
Equipment and Materials:





Test tube
wax film
test tube rack
Spatula
Measuring cylinder



Electronic balance
Copper sulfate powder
1 L beaker – kept at the teacher desk
Method:
1. Use the measuring cylinder to measure out 10mL of water.
2. Put this water into the test tube.
3. Put the square of paper on the balance and ‘zero’ the balance.
4. Put 3 spatula amounts of copper sulfate onto the piece of paper.
5. Record the mass of the paper with the chemical.
6. Carry the paper carefully to your work station.
7. Add 2 spatula amounts of copper sulfate to the test tube from the paper.
8. Put the wax film on the test tube and shake the test tube.
9. Add more copper sulfate and shake.
10. Repeat step 9 using smaller amounts until copper sulfate remains
undissolved, even after you shake the test tube a lot.
11. Measure the mass of the square of paper with the left over copper sulfate
that was not put into the test tube.
12. Record this mass.
13. Pour the blue crystals of copper sulfate back into the original beaker.
14. Measure the mass of the empty paper.
15. Record this mass.
16. Pour the saturated copper sulfate solution into the beaker at the teacher’s
desk.
17. Clean up your area.
Diagram of the method:
1. On a piece of blank paper, use your pencil and ruler to draw a labeled diagram
of the method.
2. Scan your picture.
3. Paste the scan here.
Dissolving Copper Sufate Crystals in 10mL of Water
Science 6 @ SWA
Name: Stevanus Adi Darma
Hint: FOLLOW SECTION G on the sheet called ‘How to Write a Lab Report’.
Observations:
1. I have helped you with the quantitative observations so fill in my chart below.
2. You need to add qualitative data.
Hint: FOLLOW SECTION H on the sheet called ‘How to Write a Lab Report’.
Record of Dissolving Copper Sulfate Crystals in Water
a
b
c
d
c
d
Before
During
After
Mass of paper and copper sulfate at the end /g
2.5
Mass of paper alone /g
1.2
Mass of copper sulfate we had left at the end /g
1.3
Mass of copper sulfate we had at the start /g
Mass of copper sulfate we had left at the end /g
Mass of copper sulfate we used /g
3.9
2.5
1.4
Observations of Dissolving Copper Sulfate crystals in
Water
The copper sulfate was put into the
paper to be weighed by the
electronic balance then weighed the
paper itself to find out to find out
the weight of the crystals.
Some of the copper sulfate crystals
were poured into the test tube and
was putted a wax film on the top of it
and was shook and turned blue.
Then putted two spoons of the
crystals after measuring the
milliliters of water and was shaken
again.
Some parts of the copper sulfate
crystals cannot dissolve anymore.
Conclusion:
Dissolving Copper Sulfate Crystals in 10mL of Water
Science 6 @ SWA
Name: Stevanus Adi Darma
1. J1 - 2.5 grams dissolved in 10mL of water during the experiment.
2. J4 - 2.72 grams dissolved in 10mL of water because with 100mL of water
only 27.2 can dissolve and why cant it dissolve more is because it is the
only volume the water could take. The source is Sinarmas World Academy
6 Science LAB: How much copper sulfate can 10mL of water dissolve.
Evaluation:
1. Follow K4. Even though you followed the method perfectly, errors
happened because the method was not perfect so you must make a table
to list all the things that make this method not perfect and how you would
improve it.
Weakness in the method
When the copper sulfate
was trying to be put into
the test tube a small
amount of it was
accidentally missed the
hole of the test tube twice.
How to improve it
The experiment was
continued even though
their was a mistake and
just calculated the record of
the weigh of the copper
sulfate crystals.
Criterion D: scientific inquiry
Student’s Teacher’s SWA MYP Descriptor – Consistent with
Opinion Decision
the complexity of the work
The student does not reach a standard described
by any of the descriptors given below.
The student attempts to articulate a focused
problem or research question.
0
1–2
Task specific clarifications

My work does not match requirements below.


I tried to write a clear Aim.
I try to predict what will happen in the
experiment
I tried to identify the variables and explain
how they would be manipulated or controlled.
My method is incomplete.
My Evaluation is incomplete.
The students attempts to predict what will
happen in the experiment.

The student attempts to identify variables.


The method suggested is incomplete.
The student attempts to make comments on
the method.
The student articulates a problem or research
question.
The student makes a prediction related to the
concept investigated.
3–4
4
The student identifies some appropriate
materials and equipment and writes a simple
method, attempting to identify some of the
variables and controls involved and how to
manipulate and control them.





I define the aim of the experiment.
My hypothesis is partially developed.
I identify some of the variables and explain
how they are changed, measured, or kept
constant.
My method is mostly complete.
My evaluation includes one significant way to
improve this experiment
The student comments on the method.
5–6
The student attempts to suggest
improvements to the method.
The student articulates a problem or research
question (asks a question of type: “What will
happen if…?”, “Why does this happen when…?”)



The student makes relevant predictions. (“If I do
I correctly defined the aim of the experiment.
My hypothesis is testable, is explained
scientifically, and is compared to the results.
I identify all variables and explain how they are
changed, measured, or kept constant.
Science 6 @ SWA
Name: Stevanus Adi Darma
this, then this will happen.”)

The student identifies appropriate materials
and equipment, writes a simple method,
identifying the variables and controls and how
to manipulate and control them.


My evaluation includes comments on how fair the
method was.
My evaluation includes comments on how accurate
and precise the results were.
My evaluation included at least two important ways
to improve this experiment.
The student comments on the method and
quality of the data collected (asks questions of
type: “Is the method effective/workable?”, “Is
the data accurate?”)
The student makes comments on how the
outcome of the investigation helps to answer the
research question (asks questions of type: Is my
prediction/research question supported by the
data?”)
The student suggests relevant improvements to
the method.
Criterion E: processing data
Student’s
Opinion
Teacher’s
Decision
0
1–2
3–4
3
Task specific clarifications
SWA MYP Descriptor
The student does not reach a standard
described by any of the descriptors given
below.

My work does not match the requirements
below.
The student collects some data and
attempts to record it in a suitable format.

Some of my data is relevant and my
table/graph/drawings are partly correct
The student organizes, transforms, and
presents data using simple numerical or
visual forms with some errors or
omissions.

I tried to make a conclusion.

My data is relevant and recorded in a suitable
way.
I try to organize and process the data
My conclusion matches the observations
The student attempts to draw a
conclusion but this is not consistent
with the interpretation of the data.
The student collects sufficient relevant
data and records it in a suitable format.
The student organizes, transforms and presents data in numerical and/or visual
forms with a few errors or omissions.


The student states a trend, pattern or
relationship in the data.
The student draws a conclusion consistent
with the interpretation of the data.
The student collects sufficient relevant
data and records it in a suitable format.
5–6
The student organizes, transforms and
presents data in simple numerical and/or
 My data is relevant and my presentation is
logical and clear.
 I correctly interpret the data.
 In my conclusion I comment on the reliability
of my data through comparing my results to
Science 6 @ SWA
Name: Stevanus Adi Darma
visual forms logically and correctly.
The student states a trend, pattern or
relationship in the data and uses the data to
convey understanding.
what would be expected from published data.
 I give a scientific explanation of my
conclusion.
The student draws a clear conclusion based
on the interpretation of the data and
answers questions of the type: “What
might have caused…? “How can we explain
what happened using what we know about
science?”
Why I got what I got on my
Lab on Saturated Solution of Copper Sulfate
Student fills in the purple boxes please.
Student Name:
I followed the tips on how to write a lab report: YES ☐ NO ☐
I read the marking sheet while doing this lab report: YES ☐ NO ☐
On Criterion D called Scientific Inquiry, I got 3-4
out of 6.
Here is my plan for how to improve next time: I should read
carefully about the tips and instructions.
On Criterion E called Processing Data, I got 3-4
out of 6.
Here is my plan for how to improve next time: I should do it step by
step and take time doing it next time.
Science 6 @ SWA
Name: Stevanus Adi Darma
Parent fills in the green box please.
Considerable time has been spent by student and teacher on this task with the goal of
student improvement.
Kindly glance through the comments on the task to gain an understanding of your child’s
progress with the skills we are developing.
To help me convince your child of the importance of learning from our mistakes
and successes, please encourage your child to give thoughtful comments above that
show they have read the advice I have written on their work.
Kindly print your name below AFTER you are satisfied with your
child’s reflection in the purple boxes.
Name of person at home who has seen this work:_____Veni
Vennessa_____________
Relationship: Stevanus’s Aunt
Comments/concerns always welcome to Jane Altemen at jane_altemen@swa-jkt.com
Download