Science Review

Why aren't pearls considered minerals?

• Minerals are not solids.

• Minerals do not form in nature.

• Minerals form in only square crystals.

• Minerals are not made by living things

You find a clear mineral that can't be scratched by any other mineral, what mineral did you find?

• diamond

• quartz crystal

• calcite

• gypsum

Bethany and Ian find 2 chunks of quartz. Bethany's piece is colorless. Ian's piece is light pink. What do the 2 pieces of quartz NOT have in common?

• color

• luster

• streak

• hardness

Jorge observes a sample of the mineral galena. He describes the mineral as cubic, gray metallic and opaque. Which term best describes galena's luster?

• cubic

• gray

• metallic

• opaque

This mineral fizzes when you put a drop of vinegar on it.

• calcite

• quartz

• diamond

• corundum

Pyrite has a gold color, what color is its streak?

• Red

• Blue

• Purple

• Greenish-black

This mineral can conduct electricity.

• Quartz

• Corundum

• Calcite

• Pyrite

True or False.

A metamorphic rock is formed from the result of heat and pressure.

True or False.

Rock salt is formed when magma or lava hardens.

True or false.

Feldspar is a mineral that can conduct electricity.