Acids and Alkalis KS3

What do all acids contain?

• Hydroxide ion

• Hydrogen ion

• Calcium ion

• Water

What ion do all alkali solutions contain?

What colour does universal indicator turn in a strong acid?

• Purple

• Yellow

• Red

• Green

What colour does universal indicator turn in a strong alkali?

• Purple

• Yellow

• Red

• Green

What colour does universal indicator turn in a neutral solution?

• Purple

• Yellow

• Red

• Green

What pH is a neutral solution?

A solution turns blue litmus paper red, what is the chemical?

• An acid

• An alkali

• Neutral

• Cannot tell

A solution turns blue litmus paper blue, what is the chemical?

• An acid

• An alkali

• Neutral

• Cannot tell

What gas is formed when a metal reacts with an acid?

What acid is used to make magnesium chloride crystals

• Hydrochloric acid

• Sulfuric acid

• Nitric acid

• Phosphoric acid