Unit 2 - Minerals and rocks

Emeralds are examples of ...

• Rocks

• Stones

• Minerals

• All are correct

Another way of saying precious stones is ...

• rocks

• rocks precious

• gemstones

• minerals

All of the minerals shine.

• False

• True

• It depends

• False, only the emeralds.

Diamonds are composed of only one substance, ........

• gold

• dioxide

• carbon

• nitrogen

Some minerals are composed of more than one substance. Emeralds are made of ...... different substances.

• 5

• 4

• 3

• 2

Iron needs to be separated from other substances and ................... before we can use it.

• torn apart

• heated

• mixed with shiny minerals

• all are incorrect

Silver and gold are minerals and ..................

• zinc

• rocks

• metals

• all are correct

We can use a mineral called ................. to make the sink and toilet in a bathroom.

A mineral called manganese is a component of LEDs.

• True

• False

Which soft metal (and mineral) is combined with other substances to protect our skin from the sunshine?

• Manganese

• Silver

• Zinc

• Gold