8RSA

How do these show if a metal reacts with the acid?

Look at the diagram.

What is the order of reactivity of these metals? Starting with most reactive first and ending with least reactive

• 1) Magnesium

  2) Iron

  3) Zinc

  4) Copper

• 1) Magnesium

  2) Iron

  3) Copper

  4) Zinc

• 1) Magnesium

  2) Zinc

  3) Iron

  4) Copper

• 1) Copper

  2) Iron

  3) Zinc

  4) Magnesium

• 1) Zinc

  2) Magnesium

  3) Iron

  4) Copper

Which metal goes rusty?

• copper

• iron

• magnesium

• zinc

A gas in the air reacts with iron to make it rusty. Give the name of this gas.

What could you do to an iron gate to protect it from this gas in the air?

Sophie tests each material with a magnet.

Which two materials are attracted to the magnet?

• aluminium

• iron

• plastic

• marble

• steel

Which TWO properties are needed for the metal grill?

• it is rigid

• it has a very high melting point

• it is magnetic

• it is shiny

• it rusts

What evidence in the diagrams shows that a chemical reaction has taken place?

The reaction between iron and copper sulphate is a displacement reaction.

Give the name of the orange metal visible after one week.

The reaction between iron and copper sulphate is a displacement reaction.

What is the name of the compound formed in this reaction?