Acid Properties

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 colourless substance is an acid or an alkali?

• Catalyst

• Salt

• Universal Indicator

• Water

What happens to the pH of an acid during neutralisation?

• It stays the same

• It moves toward pH 1

• It moves towards pH 7

• It moves towards pH 14

Which pH levels indicated a strong acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak acid?

• 1-3

• 4-6

• 8-11

• 12-14

Acids taste...

• Sweet

• Salty

• Sour

• Smooth

Strong acids and alkalis are...

• Sour

• Sweet

• Corrosive/Caustic

• Burn litmus paper

• PH scale

• pH ruler

• pH scale

• pH statistical tables

Dilute hydrochloric acid is a...

• Strong acid

• Weak acid

• Weak alkali

• Strong alkali

Which substance is an acid?

• Water

• Bleach

• Orange juice

• Washing powder