Acids and Alkalis Revision

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 is the pH of distilled water?

• pH 12

• pH 3

• pH 8

• pH 7

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

Acids taste...

• Sweet

• Salty

• Sour

• Smooth

Alkalis feel...

• Rough

• Granulated

• Soapy

• Smooth