Question 63
A series of experiments will be set up in the laboratory. You will be told which ones to carry out.
Safety
Before trying any of these reactions, you must carry out a risk assessment. Think about how you will stay safe.
Try some or all of these activities and decide if a chemical reaction has taken place. Share them with the class.
You do not need to carry out these investigations in any particular order.
For each investigation, state what you did and mention any safety considerations. What clues help you to decide?
Experiment A
You will need:
- safety glasses, black copper oxide powder, dilute sulfuric acid, a beaker and a stirring rod
Add some black copper oxide powder to about 150 cm³ dilute sulfuric acid in a beaker. Stir gently.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
Safety
Before trying any of these reactions, you must carry out a risk assessment. Think about how you will stay safe.
Try some or all of these activities and decide if a chemical reaction has taken place. Share them with the class.
You do not need to carry out these investigations in any particular order.
For each investigation, state what you did and mention any safety considerations. What clues help you to decide?
Experiment A
You will need:
- safety glasses, black copper oxide powder, dilute sulfuric acid, a beaker and a stirring rod
Add some black copper oxide powder to about 150 cm³ dilute sulfuric acid in a beaker. Stir gently.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
