S3 Acids and Bases

Which of the following in NOT an example of a base

• Calcium hydroxide

• Calcium carbonate

• Calcium oxide

• Calcium chloride

Sodium hydroxide + hydrochloric acid →

Calcium oxide + nitric acid →

Lithium oxide + sulfuric acid →

Calcium carbonate + hydrochloric acid →

potassium carbonate + sulfuric acid →

Soluble metal oxides, when dissolved in water, will produce solutions with...

• A pH lower than 7

• A pH higher than 7

• A neutral pH

Soluble non-metal oxides, when dissolved in water, will produce solutions with...

• A pH lower than 7

• A pH higher than 7

• A neutral pH

What colour will acids turn universal indicator?

• Red, orange, yellow

• Green

• Purple, blue

• The colour would stay the same

What colour will alkalis turn universal indicator?

• Red, orange, yellow

• Green

• Purple, blue

• The colour would stay the same