Scaffolding Tool: Designing your Practical
1. Choosing a suitable Question to 2 . What do I need to know & research? 3. Fair Testing: Variables that affect this
investigate (Your question must be capable Write some questions you will need to answer to investigation
of being tested. Talk to your teacher to complete your investigation (hint: What are you
discuss it further) going to do? What equipment do you need? What Independent (What will you Change):
Question: What happens when observations or measurements are you going to The amount of bi carb soda
make?)
you mix vinegar and bi carb
soda What reaction occurs
Dependent (What will you measure):
How to measure the reaction
The temperature of the liquid
7. Results/Analysis
What data are you going to collect? How much vinegar do we need to add Controlled variables (What will you keep
How cold it is.
the same): The amount of vinigar
How much bi carb soda do we need to add
How are you going to record your data
record it with a thermomiter? 4. My Hypothesis
we Title If vinegar is added to bi carb soda then the
temperature will decrease and the liquid will
release
How are you going to analyse yourdata? Bi Carb and Vinegar experment 5. My Prediction & Explanation
With a thermomiter (Explain why you think it might happen)
I think that the vinegar and bi
carb soda will go fizzy and go
cold
8. Potential hazards/ Safety 7. Method (A good procedure is one that 6. Equipment/Materials (Write where you will
someone can understand and use to repeat your access it from: Home or School? Your School
Issues (You will need to discuss your investigation easily)
experimental design with your teacher so might not be able to provide you with all the
that the teacher can complete the Risk 1. measure vinegar 250 mil equipment you request)
assessment form) 2. Then prepare bi carb soda 1. large beaker
3. then add the vinegar 2. measuring cylinder
The vinegar could go in your 3. 2 tablespoons and 1 teaspoon of bi carb soda
eyes and you could go blind. 4. then add 1 teaspoon bi card soda 4. 1 leatre of vinegar
or 1 tablespoons or 1 and a half 5. aprons
tablespoon. 6. safety hazard
Feedback on your Scaffolding Tool
Experiment Name Bicarbonate and Vinegar Experiment
Group Members Keith, Hayden and Jamie
Need to be more specific…e.g. What happens when vinegar is mixed with more concentration of bicarbonate soda?
1. Suitable question
Good, one other question you can consider is how you will measure the temperature of the liquid?
2. What do I need to
know & research?
Controlled Variables: only one controlled variable? What are the other variables you keep the same for your experiments?
3. Fair Testing What about beaker size? Please be careful with the spellings.
4. Hypothesis Rephrase! If you add more bicarbonate soda to Vinegar, then…….?? Write what will happen.
5. Prediction and You need to rephrase the prediction and explanation! Explain the chemical reaction involved. What will happen if you add more
Explanation bicarbonate? why the temperature will decrease? Do some research here.
6. Equipment &
Materials Why safety hazard in material list? You men goggles?
7. Method Method is incomplete. You need to include exact measurements and all the steps to follow.
8. Safety Issues Need to mention clearly what safety measures you need to take to address the safety issues you have written.
9. Results/ Analysis Record with a thermometer needs to go in method section. How you are going to record your observations and result? How
you are going to analyse your data? Not with a thermometer. A graph to compare?
Scaffolding Tool: Designing your Practical
1. Choosing a suitable Question to 2 . What do I need to know & research? 3. Fair Testing: Variables that affect this
investigate (Your question must be capable Write some questions you will need to answer to investigation
of being tested. Talk to your teacher to discuss complete your investigation (hint: What are you
it further) going to do? What equipment do you need? What Independent (What will you Change):
Question: What will happen when you observations or measurements are you going to The amount of bi carb soda
mix vinegar with more concentration of make?)
bi carbonate soda What reaction occurs
How to measure the reaction
Dependent (What will you measure):
How much vinegar do we need to add The temperature of the liquid
7. Results/Analysis How much bi carb soda do we need to add
How we will measure the temperature of
What data are you going to collect? the liquid Controlled variables (What will you keep
How cold is the mixture the same): The amount of vinegar, Beaker
size, Size of Measuring cylinder, outside
temperature
How are you going to record your data
record it? 4. My Hypothesis
We will record the temperature of the Title If more bi carb soda added to vinegar then the
mixture in a table temperature will decrease and the liquid will
release
How are you going to analyse your Bi Carbonate and Vinegar experiment 5. My Prediction & Explanation
(Explain why you think it might happen)
data? We will use a graph to compare the I think that the vinegar and bi carb soda will go fizzy as
results it produce gas and the liquid will go cold. This is
because the reaction is endothermic and requires the
absorption of heat in order to create the products of
the reaction which are sodium acetate, water, and
7. Method (A good procedure is one that carbon dioxide
8. Potential hazards/ Safety
someone can understand and use to repeat your
Issues (You will need to discuss your investigation easily)
6. Equipment/Materials (Write where you will
experimental design with your teacher so access it from: Home or School? Your School might
1. Measure 250 ml vinegar
that the teacher can complete the Risk not be able to provide you with all the equipment you
2. prepare bi carbonate soda request)
assessment form)
The vinegar could go in your eyes and 3. add the vinegar
you could go blind. The 4. Add 1 tablespoons of bi carbonate soda 1. large beaker (500ml)X 2
experimenters need to wear apron, 5. Measure the temperature using thermometer 2. 250ml measuring cylinder X 2
Goggles and gloves Repeat the experiment with 2 table spoons and 3. 6 tablespoons and of bi carb soda
3 table spoon of Bicarbonate soda 4. 1 litre of vinegar
5. aprons X2
6. Goggles X 2
1.
