Earth, Minerals - Part 2: Question Preview (ID: 4512)

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The softest mineral on the Mohs scale is:
a) talc
b) gypsum
c) apatite
d) quartz

Brick, steel and glass are not classified as minerals because:
a) they are not naturally occurring
b) they are organic
c) they are too hard
d) they have many uses

A mineral with a hardness of 6 will scratch a mineral with a hardness of more than 6
a) false - the softer will be scratched
b) true

Minerals come from organic materials
a) False - organic means it must be or have been living, minerals are inorganic
b) True

Halite crystals form when a solution of water and salt condenses
a) True
b) False

The faster magma cools, the smaller the crystals formed
a) True
b) False - faster makes small crystals, slower makes larger crystals

The splitting of a mineral along flat surfaces is:
a) cleavage
b) fracture
c) density
d) broken

Atoms of a mineral are arranged in repeating patterns forming:
a) crystals
b) fracture
c) cleavage
d) organic matter

Talcum powder is made from the very soft mineral called:
a) Talc
b) Gypsum
c) Talcum
d) Quartz

If Lava is above the ground but if it is below the ground it is called:
a) magma
b) lava
c) slush
d) gunk

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