C1.3

Question 1

What does hydrochloric acid in the stomach do?

Answer 1

Help digestion and kill bacteria

Question 2

What do indigestion remedies do?

Answer 2

they neutralise excess stomach acids

Question 3

What are acids normally neutralised by?

Answer 3

metal oxides, hydroxides and carbonates

Question 4

Acid + metal oxide ??

Answer 4

salt + water

Question 5

Acid + metal hydroxide ??

Answer 5

salt + water

Question 6

Acid + metal carbonate ??

Answer 6

salt + water + carbon dioxide

Question 7

Salt names of
Hydrochloric?
Sulphuric?
Nitric?

Answer 7

Chloride
sulphate
nitrates

Question 8

What is electrolysis?

Answer 8

The decomposition of an ionic compound using a direct current.

Question 9

Electrolysis of Hydrochloric acid products?

Answer 9

Hydrogen + Chlorine

Question 10

Explanation of Electrolysis?

Answer 10

Attach wire to both carbon rods. put wire into DC.
Test tube over both rods to catch gas
elements will be attracted to opposite charged rods
bubble into test tube

Question 11

Test for hydrogen?

Answer 11

Hold lighted splint in test tube and it will pop

Question 12

Test for chlorine?

Answer 12

Damp blue litmus paper turns red and then bleaches white

Question 13

Chemical test for oxygen?

Answer 13

light a splint, blow out so still glowing. will relight in test tube of oxygen