Question 67
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 E
You will need:
- safety glasses, copper sulfate solution, evaporating dish, pipe-clay triangle, tripod, Bunsen burner, tongs
Place a solution of copper sulfate in an evaporating dish. Heat gently until the solution starts to spit. Turn off the heat and leave the evaporating basin to cool.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
Safety note for this package: stop heating before spitting; do not heat to dryness. The source wording above is preserved, not recommended.
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 E
You will need:
- safety glasses, copper sulfate solution, evaporating dish, pipe-clay triangle, tripod, Bunsen burner, tongs
Place a solution of copper sulfate in an evaporating dish. Heat gently until the solution starts to spit. Turn off the heat and leave the evaporating basin to cool.
What do you observe? Has a chemical reaction taken place? What evidence do you have?
Safety note for this package: stop heating before spitting; do not heat to dryness. The source wording above is preserved, not recommended.
