Yr7 C4.4 Making salts

What is a salt?

• A metal that reacts with water

• A compound formed when the hydrogen in an acid is replaced by a metal

• A type of acid used in reactions

Which salt is formed when sodium hydroxide reacts with hydrochloric acid?

• Sodium nitrate

• Sodium sulfate

• Sodium chloride

What are the products when a metal reacts with an acid?

• A salt and carbon dioxide

• A salt and hydrogen

• A salt and oxygen

Which of the following is a base used to make copper sulfate crystals?

• Magnesium

• Copper oxide

• Sulfuric acid

Which acid makes a sulfate salt?

• Hydrochloric acid

• Nitric acid

• Sulfuric acid

What is the purpose of filtering the mixture when making copper sulfate crystals?

• To remove the water

• To remove extra copper oxide

• To speed up evaporation

What is left in the evaporating basin after the water has evaporated?

• Hydrogen gas

• Copper oxide

• Copper sulfate crystals

What gas is produced when magnesium reacts with sulfuric acid?

• Oxygen

• Carbon dioxide

• Hydrogen

What are the products of zinc + nitric acid?

• Zinc nitrate and hydrogen

• Zinc chloride and oxygen

• Zinc sulfate and hydrogen

When an acid reacts with a base, what are the products?

• A salt and water

• A salt and hydrogen

• Water and carbon dioxide