Mock

Question 1

What is the acronym used to remember oxidation and reduction

Answer 1

O- oxidation
I- is
L- loss (of electrons)
R- reduction
I- is
G- gain (of electrons)

Question 2

Oxidation reaction

Answer 2

Oxygen is added to an element or compound

Question 3

Reduction reaction

Answer 3

Oxygen is removed from an element or a compound

Question 4

Redox reaction

Answer 4

When oxidation and reduction both take place at the same time.

Question 5

Reducing agent?

Answer 5

The element/ compound that gets oxidised

Question 6

Acid + metal carbonate ——>

Answer 6

Salt, water, carbon dioxide

Question 7

Acid + base ——>

Answer 7

Salt + water

Question 8

MASH?

Answer 8

Metal + acid ——> salt + hydrogen

Question 9

Chemical formula for:

Nitric acid

Hydrochloric acid

Sulphuric acid

Answer 9

Nitric- HNO3

Hydrochloric- HCL

Sulphuric H2SO4

Question 10

What is an electrolyte solution?

Answer 10

Ionic compound in molten or dissolved solution that conducts the electricity

Question 11

Why do electrodes need to be inert (chemically inactive) in electrolysis?

Answer 11

So they don’t participate in a side reaction with the electrolyte

Question 12

What ions does an Aqueous solution have?

Answer 12

H+, OH-

Question 13

Energy change = ?

Answer 13

Energy in - energy out

Question 14

What happens in oxidation and reduction?

Answer 14

Oxidisation

Electrons are lost or oxygen is added

Reduction

Electrons are gained or oxygen is removed