Rust and corrosion

Question 1

What is a redox reaction?

Answer 1

A redox reaction is when both Reduction and oxidation happen at the same time in the same reaction.

Question 2

Give an example of a redox reaction

Answer 2

Copper oxide+CARBON-> copper+carbon dioxide

Question 3

When does corrosion occur?

Answer 3

When metals react with oxegen

Question 4

If you add no water and just air from the atmosphere, what will happen?

Answer 4

No rust

Question 5

If you add water to a test tube, and no air, what will happen?

Answer 5

No rust

Question 6

If you add water AND air to a test tube, what will happen?

Answer 6

Rusting will occur, but only slightly

Question 7

If you add water, salt AND air to a test tube, what will happen?

Answer 7

A big amount of rusting will occur as salt speeds up the rusting process

Question 8

Give the word equation for rust

Answer 8

iron+oxegen=iron oxide

Question 9

Which metal is the only one that doesn’t rust, why?

Answer 9

Gold because it is very unreactive