Minerals

This mineral is the softest on earth and can be scratched by a fingernail. Which mineral is it?

• calcium

• talc

• magnetite

• diamond

This mineral is the primary source of aluminum. Which mineral is it?

• gypsum

• talc

• bauxite

• halite

This mineral is a naturally occurring magnet and can attract iron objects. Which mineral is it?

• diamond

• bauxite

• iodine

• magnetite

This chemcial can be used for baking, cleaning, as a fire extinguisher and a treatment for acid indigestion. Which chemical is it?

• sodium bicarbonate

• iodine

• calcium

• gneiss

This chemical is used in the production of toothpaste and can be found alongside other minerals such as quartz and calcite. Which mineral is it?

• diamond

• calcite

• fluorite

• halite

This mineral can be eaten and makes our food tastes even better. Which mineral is it?

• sodium bicarbonate

• halite

• gypsum

• talc

This mineral is used for producing building materials and has a hardness level of 2. Which mineral is it?

• halite

• bauxite

• gypsum

• diamond

This mineral is important for bones and teeth in humans and animals. Which mineral is it?

• gneiss

• calcite

• calcium

• sodium carbonate

This mineral is the hardest substance on Earth. It has a hardness level of 10 on the Mohs scale. Which mineral is it?

• talc

• gypsum

• diamond

• fluorite

This mineral can be used to make lenses for microscopes. It can split a single beam of light into two separate beams. Which mineral is it?

• calcite

• calcium

• fluorite

• diamond