When an acid is added to red litmus paper it will ...

• turn blue.

• turn white.

• turn red.

• turn green.

When an alkali is added to red litmus paper it will ...

• turn blue.

• turn white.

• turn red.

• turn green.

The pH of an acid is between ...

• 1-3

• 1-6

• 1-10

• 1-14

A neutral substane has a pH of ...

The pH of a substance can be measured using an ...

• ruler.

• stopwatch.

• thermometer.

• indicator.

Instead of using an indicator we could get a more precise measurement of pH if we use a ...

• probe.

• litmus paper.

• beaker.

• thermometer.

Neutralisation reactions produce ...

• pepper and water.

• salt and water.

• salt only.

• water only.

Another word for a base is an ...

• alkali.

• acid.

• neutral.

• solution.

In this reaction sodium hydroxide and hydrochloric acid and mixed together to produce water and ...

Select what we would observe if a metal reacts with water.

• Bubbles only.

• Temperature change only.

• Fizzing sound only.

• All of these.