Are compounds different from the elements in them?

Question 1

iAim?

Answer 1

To make a sample of iron sulphide from iron and sulphur.

Question 2

Equipment?

Answer 2

Test tube
spatula
test tube holder
sulphur powder
bunsen burner
petri dish

Question 3

Observation?

Answer 3

properties Element mixtures compound
iron iron/sulphur iron+sulphur iron sulphide

colour brown/yellow yellowish brown solid greyish brown solid

state solid/solid powder solid solid

magnetic magnetic/nonmagnetic separates iron from sulphur magnetic due to iron in it

Question 4

Result?

Answer 4

Properties of elements are different from the compounds made from them.

Question 5

Suggest a way of separating the mixture of iron and sulphur before heating. Do you think that method would work after heating?

Answer 5

By using a magnet. No this will not work after the compound has been formed.

Question 6

What happens when the tube is heated that suggests that a reaction is taking place?

Answer 6

The elements will melt and the compound has been formed.