0308-W033(H) DISCOVERING THE ELEMENTS PART 1

What are the 4 elements suggested by a Greek thinker.

Which of the following is not the first discovered?

• carbon

• sulfur

• gold

• copper

When people starting to extract copper from its rock?

• 2000 years ago

• 3000 years ago

• 7000 years ago

• 700 years old

Suggest how people 7000 years ago used copper?

copper mixed with ______ to make bronze that can be use to make knives.

• copper

• nickel

• phosphorus

• magnesium

Tools and weapons were made from _______ .

How do you obtained zinc from its rock?

The scientist name which made the first phosphorus is ____________.

In 1700s, how many new elements were found?

• 7

• 17

• 711

• 117

Where th emagnesium is isolated from?

• river

• sea

• pond

• lake