Minerals - 7th science

What mineral makes up 90% of the earth's crust?

• diamonds

• silicates

• nonsilicates

• gold

What mineral makes up less than 10% of the earth's crust?

• diamonds

• silicates

• nonsilicates

• gold

All of these are silicates except for one. Which is NOT a silicate?

• Quartz

• Feldspar

• Mica

• Halide

Which word means a substance made of two or more elements that have been chemically joined.

• compound

• crystal

• element

• mineral

Which is a solid whose atoms, ions or molecules are arranged in a definite pattern?

• element

• mineral

• crystal

• compound

Which is a change due to type and number of impurities or exposure to the elements?

• color

• streak

• cleavage

• luster

Which is the way a surface reflects the light?

• color

• luster

• streak

• fracture

Which word means to split along smooth flat surfaces?

• streak

• cleavage

• fracture

• hardness

Which word means to break along either curved or irregular surfaces?

• fracture

• cleavage

• streak

• denisity

Which word means the ratio of the mass of a substance to the volume of the substance?

• streak

• hardness

• density

• cleavage