rusting

Question 1

what is the only metal that can rust

Answer 1

iron

Question 2

what conditions are needed for rusting?

Answer 2

oxygen and water

Question 3

how can you prevent rust?

Answer 3

painting

adding oil or grease

barrier method

Question 4

what is galvanising?

Answer 4

covering iron with a more reactive metal (usually zinc) this is called sacrifical protection because the zinc will react before with oxygen and air

Question 5

stainless steel

Answer 5

chromium nickel

hard
resists corrosion
strong

cutlery