Chemical Reactions - Chemiese reaksies

What two products are usually produced from a combustion reaction?

• a chemical salt and hydrogen gas
• oxygen gas and a cloudy liquid
• water vapour and carbon dioxide gas
• carbon dioxide and smoke

Mixing an acid and a base always neutralises them.

• Yes

• No

What is required for a combustion reaction to take place?

(Hint: there's more than one)

• Fuel

• Heat

• Oxygen

• Acid

White the name for the symbol:

K

A reaction between an acid and a base.

• corrosion

• combustion

• decomposition

• neutralisation

The positive gas test result for a lit splint in hydrogen is:

• a squeaky pop

• the flame will reignite

• the flame will extinguish

• no change

The positive gas test result for a glowing splint in oxygen is:

• a squeaky pop

• the flame will reignite

• the flame will extinguish

• no change

Which acid is used to produce the salt copper sulphate?

• hydrochloric acid

• sulphuric acid

• nitric acid

• acetic acid

Which acid is used to produce the salt magnesium nitrate?

• hydrochloric acid

• sulphuric acid

• nitric acid

• acetic acid

Which acid is used to produce the salt aluminium chloride?

• hydrochloric acid

• sulphuric acid

• nitric acid

• acetic acid