Rusting

Question 1

What metals corrode

Answer 1

Iron and steel

Question 2

What does Iron form when it corrodes

Answer 2

Rust

Question 3

When does iron rust

Answer 3

When it is in contact with both oxygen and water

Question 4

What is the name of the substance created after Iron rusts

Answer 4

Hydrated iron(lll)oxide

Question 5

Barrier methods to prevent rusting:

Answer 5

• painting/coating with plastic

- piling greasing

Question 6

Sacrificial message to prevent rusting:

Answer 6

• involves putting a more reactive metal on top of the iron so the water and oxygen react with this instead of the iron
• zinc is used as a coat can be sprayed on this is called galvanising