Elements Compounds And Mixtures

Question 1

Define element

Answer 1

A substance that cannot be broken down into simpler substances by chemical means
Contain only one type of atom

Question 2

Define compound

Answer 2

A substance made op of two or more different elements chemically combined. Contains two or more different types of atoms
Eg water

Question 3

Define mixtures

Answer 3

Two or more different substances mingled with each other but not chemically combined
Eg Air

Question 4

Mixture of iron and sulfur

Compound iron sulfide

Answer 4

Using a mortar and pestle ground together iron filings and sulfur.

• use magnet to separate iron from sulfur
• mix again, place in test tube and heat up using a Bunsen burner and retort stand
• it will glow, then turn solid dark gray -can’t be separated, it’s a compound , different properties than the elements from which it’s made