What is the pH of distilled water?

• pH 12

• pH 3

• pH 8

• pH 7

What colour does litmus paper turn when added to an alkali?

• Blue

• Red

• Green

• Colourless

What colour does litmus paper turn when added to an acid?

• Blue

• Red

• Green

• Colourless

What other laboratory substance can you use to test if a colourless substance is an acid or an alkali?

• Catalyst

• Salt

• Universal Indicator

• Water

Which substance is an acid?

• Water

• Bleach

• Orange juice

• Washing powder

Which pH levels indicated a strong acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak alkali?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a strong alkali?

• 1-3

• 4-6

• 8-11

• 12-14

What pH range would you get for an acid?

• 0-6

• 7

• 7-14

• 2-10