EASY
Lower Secondary Stage 9
IMPORTANT
Earn 100
Platinum is less reactive than tin. Suggest why steel cans are coated with tin rather than platinum to stop them from rusting.
Important Questions on Reactivity and Rates of Reaction
EASY
Lower Secondary Stage 9
IMPORTANT
The teacher told the students that if calcium had been added to dilute sulphuric acid, there would have been a reaction, but that the reaction is too dangerous to do in the laboratory. She also told them that if the lead had been added to dilute sulphuric acid, few bubbles would form but only very slowly. Finally, the teacher told them that If aluminium had been added to the dilute sulphuric acid, it would have been quite vigorous -there would have been a lot of bubbles, they would have heard of some fizzing and the reaction would have given off heat.
Use this information to rewrite the reactivity series in the given table and include these metals too.
EASY
Lower Secondary Stage 9
IMPORTANT
How can you see that a chemical reaction has taken place between iron and copper sulphate in the figure?
EASY
Lower Secondary Stage 9
IMPORTANT
When magnesium is added to a test tube containing copper sulphate solution a chemical reaction happens, but this time the solution changes colour much quicker which is more reactive, iron or magnesium?
EASY
Lower Secondary Stage 9
IMPORTANT
Explain whether or not adding copper powder to iron sulphate will produce a reaction.
EASY
Lower Secondary Stage 9
IMPORTANT
Predict which two of the displacement reactions below would happen:
EASY
Lower Secondary Stage 9
IMPORTANT
Describe what 'rate of reaction' means.
EASY
Lower Secondary Stage 9
IMPORTANT
Look at the table below.
Explain why apparatus lost mass.
.
EASY
Lower Secondary Stage 9
IMPORTANT
Look at the table below.
State the time taken for the reaction to stop.
