Topic 8: Acids and bases

Question 1

Is carbon dioxide acidic or basic?

Answer 1

CO2 forms a weak acid when dissolved in water

Question 2

What does amphoteric mean?

Answer 2

Able to react as both a base and an acid

Question 3

Describe the trend in acid-base properties of the oxides of period 3, sodium to chlorine.

Answer 3

basic –> amphoteric –> acidic