Reactivity series

What gas is always produced when a metal reacts with water?

• Oxygen

• Carbon Dioxide

• Hydrogen

• Carbon Monoxide

What is name of the gas which is produced when metals react with acids?

• Hydrogen

• Carbon Dioxide

• Nitrogen

• Oxygen

When a metal compound reacts with a more reactive metal, what sort of reaction occurs?

• Displacement

• Neutralisation

• Combustion

• No Reaction

When copper and magnesium sulphate are mixed together, there is no reaction. Why?

• Magnesium is more reactive than copper

• Copper is more reactive than magnesium

• Copper never reacts with metal salts

• Magnesium Sulfate never reacts with metals

Magnesium chloride + Sodium → ?

• Sodium chloride + Magnesium

• Magnesium chloride + Sodium (No change)

• Sodium magnesium + Chlorine

• Magnesium sodium chloride

Zinc sulphate + Magnesium → ?

• Magnesium + Sulfur + Hydrogen

• Zinc sulfate + Magnesium

• Magnesium sulfate + Zinc

• Zinc + Sulfur + Hydrogen

Which one of the following metals reacts most vigorously with cold water?

• Sodium

• Magnesium

• Copper

• Zinc

What element rusts?

• Carbon

• Iron

• Manganese

• Potassium

What prevents rusting?

• Painting

• Washing

• Dusting

• Sanding

What is the chemical formula of rust?

• Fe₂O₃

• Fe₂O₃.H₂O

• Fe₂O₃.xH₂0

• Fe(OH)₂.xH₂O