Stone age

Events

8000 B.C. Cattle

8000 B.C. - 1770

The first chemists lived before 8000 B.C-- area called Middle East

Humans only used simple tools during this time

8000 B.C.

Metals were not discovered

8000 B.C

Chemists learned how to start and control fire

8000 B.C

They learned how to change a range of substances to their advantage

6000 B.C - 1000

Cooked their food, fire harden mud bricks to strengthen them

6000 B.C - 1000

Chemists investigated only materials that had a high value-- Metals, gold and copper

6000 B.C - 1000 B.C

Gold became high valued-- due to the properties

4500 B.C

Copper changed, it was softer, less likely to shatter

4500 B.C

Led to creation of a hard, strong material (bronze)

4500 B.C

Through his experiments, Robert Boyle became convinced that matter is made up of tiny particles

1770 B.C

Group of people from the Middle east, hitties discovered who to extract iron from rocks-- turn into useful material

1200 B.C

People learned how to combine iron and carbon to produce steel

1500

Robert Boyle experimented with the behaviour of gases

1660 A.C

Chemists develops as new science

1770 A.C