Question 64
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 B
You will need:
- safety glasses, a test tube, a test tube rack, a small piece of zinc, dilute hydrochloric acid, a beaker and a stirring rod
Half-fill a test tube with dilute hydrochloric acid. Add a small piece of zinc.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
When you hold the test tube in your hands, do you notice anything?
Safety note for this package: do not hold a reacting or hot tube in your bare hand. Check temperature using the teacher-approved method.
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 B
You will need:
- safety glasses, a test tube, a test tube rack, a small piece of zinc, dilute hydrochloric acid, a beaker and a stirring rod
Half-fill a test tube with dilute hydrochloric acid. Add a small piece of zinc.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
When you hold the test tube in your hands, do you notice anything?
Safety note for this package: do not hold a reacting or hot tube in your bare hand. Check temperature using the teacher-approved method.
