AQA C4 Chemical Changes

What is the pH of a strong acid?

• 7

• 14

• 6

• 1

What is the pH of a weak acid?

• 1

• 5

• 8

• 14

What is the pH of a strong base?

• 2

• 7

• 9

• 14

What is the pH of a weak base?

• 1

• 6

• 8

• 14

What pH is neutral?

• 1

• 5

• 7

• 9

What colour does universal indicator turn in an acid?

• Red

• Green

• Blue

What colour does universal indicator turn in a strong base?

• Red

• Green

• Violet

Sodium hydroxide + Sulfuric acid => ?

• Sodium nitrate + water

• Sodium chloride + water

• Sodium sulfate + water

What reaction would make the products: sodium chloride + water

• Sodium hydroxide + sulphuric acid

• Sodium hydroxide + nitric acid

• Sodium hydroxide + hydrochloric acid

What do we call the substance that is being broken down by electrolysis?

• Anode

• Cathode

• Electrolyte

• Product