Chemical Change

Question 1

speed at which a reaction takes place

Answer 1

reaction rate

Question 2

chemical that helps to start or speed up a chemical reaction

Answer 2

catalyst

Question 3

the corrosion of iron

Answer 3

rusting

Question 4

a chemical reaction that wears away a metal. Air, water or chemicals in air and water, as well as many household substances, can be corrosive

Answer 4

corrosion

Question 5

a brown substance formed when iron reacts with oxygen and water

Answer 5

rust

Question 6

coating over a metal surface to prevent corrosion

Answer 6

surface protection

Question 7

protecting a metal by covering it with a more reactive metal that will corrode first

Answer 7

galvanising

Question 8

combining a substance with oxygen in a flame

Answer 8

burning

Question 9

chemical reaction involving the loss of electrons by a substance

Answer 9

oxidation

Question 10

substance, such as coal, oil and natural gas, that has formed from the remains of ancient organisms

Answer 10

fossil fuel

Question 11

the process of combining with oxygen, most commonly burning with a flame

Answer 11

combustion