AIM: (what are you trying to show?)
___________________________________________________________________________
___________________________________________________________________________
HYPOTHESIS: (what do you think will happen?)
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
EQUIPMENT: (per group)
-
2 x test tubes
1 x test tube rack
Limestone chips (Calcium Carbonate CaCO3)
HCI2 (Hydrochloric acid)
Distilled water
Pipettes
Safety glasses
METHOD:
1.
2.
3.
4.
Gather materials from front of classroom
Set up 2 test tubes with test tube rack
Collect an even amount of limestone chips in each test tube
In the first test tube, using the HCI acid, cover the limestone chips up to 1cm in the
test tube
5. In the second test tube, using the distilled water cover the limestone chips up to 1cm
up the test tube.
6. Record what you saw happen
DIAGRAM (Draw your prac set-up and label):
RESULTS: (what happened)
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
DISCUSSION:
When you added the acid to the limestone, what did you observe? ____________________
___________________________________________________________________________
At the end of the experiment, had the limestone changed? ___________________________
Was this a chemical change or physical change? ____________________________________
Write a word equation for this chemical reaction
___________________________________________________________________________
Why had this change occurred?
___________________________________________________________________________
Did you CONTROL the experiment? ______________________________________________
What things did you keep the same? _____________________________________________
What things were not kept the same? ____________________________________________
What could you have done to improve control? ____________________________________
___________________________________________________________________________
Were your predictions in the hypothesis, correct?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________