Year 9 Materials

How many mines are there in Australia?

• Less than 10

• More than 10, but less than 100

• More than 100, but less than 400

• Over 1000

What does Australia mine?

• Coal and precious metals

• Uranium and coal

• Precious metal e.g. silver and gold and other metals such as copper, zinc and nickel

• Coal, uranium, precious metals, copper, nickel zinc and other metals

The main parts of an atom are...

• protons, neutrons and neutrinos

• protons, neutrons and electrons

• positrons, neutrons and electrons

• positrons, neutrions and electrons

The charge on an electron is...

• neutral

• positive

• negative

Electrons are found in the...

• Electrons shells

• Nucleus

• They are not found in atoms

The number of electrons that go in the first electron shell is...

• 1

• 2

• 8

• 18

The inner electrons shells must fill BEFORE the outer shells...

• True

• False

Atoms are most happy when they have full outer electrons shells.

• True

• False

The name given to a positively charge atom (ion) is a....

The name given to a negatively charged atom (ion) is a...