ST.2 Reactions of Metals N5 (CIS)

Question 1

What is reduction?

Answer 1

Reduction is a gain of electrons by a reactant in any reaction

Question 2

What is oxidation?

Answer 2

Oxidation is a loss of electrons by a reactant in any reaction

Question 3

What happens in a redox reaction?

Answer 3

In a redox reaction, reduction and oxidation take place at the same time

Question 4

Metal + Oxygen —>

Answer 4

Metal oxide

Question 5

Metal + Water —>

Answer 5

Metal hydroxide + Hydrogen

Question 6

Metal + Dilute acid —>

Answer 6

Salt + Hydrogen

Question 7

How are metals arranged?

Answer 7

Metals can be arranged in order of reactivity

Question 8

How can metals be used to produce soluble salts?

Answer 8

Metals can be used to produce soluble salts. Excess metal is added to the appropriate acid, the mixture is filtered and the filtrate evaporated to dryness

Question 9

What is a displacement reaction?

Answer 9

A displacement reaction is when a metal higher up in the electrochemical series displaces the ions of the lower down metal

Question 10

When a metal is extracted from its ore, metal ions are changed to metal atoms - name this type of reaction

Answer 10

Reduction