1. Bottle containing ammonium nitrate
Temperature changes
Hydrochloric acid 2 3
15cm3
10cm3
Hydrochloric acid 1
Measuring cylinder
Quarter fill test tube with tap water
Pour
Pour
Thermometer
Boiling tube (bigger than a test tube)
One scoop
Thermometer
Bottle containing ammonium nitrate °C
Leave for one minute and record temperature °C
Leave for one minute and record temperature
Add
Sodium hydroxide
15cm3
Add a piece of magnesium
Test tube
Clean measuring cylinder
Feel the tube to check the temperature. Record result in box
Pour
Record highest temperature °C
Record highest temperature °C

2. Complete in your book For experiment 1 For experiment 2
What did you observe?
When the ammonium nitrate is added to the water, what happens to the temperature?
Has a chemical reaction occurred?
If the mass of the test tube was 15g, ammonium nitrate 3.1g and water 4g, what would the mass of the test tube and everything in it be at the beginning of the reaction?
Would the mass have increased, decreased or stayed the same?
Explain your answer to e
For experiment 2
By how much did the temperature change in the reaction?
When sodium hydroxide and hydrochloric acid react together they make sodium chloride and water. Write a word equation for this reaction.
What is the formula for water?
What are the reactants and what are the products in this reaction?
Water is a molecular substance. What does this mean?
Sodium chloride is safe to eat but sodium and chlorine are both toxic. Explain why this is.
For experiment 3
What did you observe during this reaction?
How do you know a chemical reaction took place?
Magnesium reacts with hydrochloric acid to form magnesium chloride and hydrogen. Write a word equation for this reaction.
Identify all elements and compounds in the equation
The symbol equation for this reaction is below. Copy it into your exercise book and balance it. Mg + HCl  MgCl2 + H2
During this reaction, the overall mass decreases. Explain why this happens.

3. 1 1 1 2 2 2 3 3 3 4 4 4 5 5 C1 WS4 Chemical Reactions Mini-Practicals
40cm3
Hydrochloric acid
One scoop
Spatula
20cm3
Hydrochloric acid 1 1 1
Bottle containing citric acid
Measuring cylinder
Measuring cylinder
Add 2
Pour 2
Pour 2
Test tube
Conical flask
One scoop
Universal indicator 3
Conical flask 3
Bottle containing sodium hydrogen carbonate
One scoop
Record Observations
Spatula 3
Sodium hydroxide
10cm3
Add 4
Bottle containing marble powder 4
Clean measuring cylinder
Add 4
Pour
Carefully quarter fill with tap water 5
Record Observations 5
Record Observations
Feel the test tube and record observations
Repeat steps 4 and 5 twice more. Record observations

4. C1 WS8 Copper Carbonate Investigation
Start
C1 WS8 Copper Carbonate Investigation
One scoop
Spatula
Mass:
_____g
Bottle containing copper carbonate
Plastic weighing boat
Add two more scoops
Record mass of weighing boat and copper carbonate
Clamp at an angle
Boiling tube
Check your stand is set up like the one on the teacher’s desk
Boss
0.00
Pour
Start stopwatch
Boiling tube (bigger than test tube)
Retort stand
Ask teacher to light – set to roaring flame
Bunsen
Time:
______s
Pour
Mass:
_____g
0.00
Record mass of weighing boat and product
Stop stopwatch when colour stops changing

5. C3 Crystallisation Start Bunsen checklist: Away from edge of the table
Connected to gas tap
On a heat proof mat
Gauze on top of tripod
Goggles over eyes
Hair tied back
Set to safety before lighting
Sulphuric acid
20cm3
Pour
100cm3 beaker
Ask teacher to light – set to invisible flame once lit
Measuring cylinder
Add
One scoop
Bottle containing copper oxide
Heat till just before starts to boil
Add copper oxide until no more will dissolve
Stir with glass rod and warm for 30 seconds
Slowly pour
Slowly pour
Filter paper
Funnel
Evaporating dish
Leave on side of room on top of a piece of paper with your name
Heat with blue flame until you see crystals form around the edge
Warm for three minutes. If it starts to boil, ask your teacher to show you how to safely move a bunsen burner
Conical flask