*****6th Chapter 3 Test: Minerals

Front

What is a mineral?

Back

A naturally occurring inorganic solid with a definite chemical composition and a crystalline structure.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, typically expressed in grams per cubic centimeter (g/cm³).

Front

How do you calculate mass using density and volume?

Back

Mass = Density × Volume.

Front

What is luster in minerals?

Back

Luster is the way a mineral reflects light, which can be metallic or nonmetallic.

Front

What is the difference between cleavage and fracture in minerals?

Back

Cleavage is the tendency of a mineral to break along flat surfaces, while fracture is the way a mineral breaks in an irregular manner.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale used to measure the hardness of minerals, ranging from 1 (talc) to 10 (diamond).

Front

What conditions lead to the formation of large mineral crystals?

Back

Large mineral crystals typically form when magma cools slowly in an unrestricted space.

Front

What is a metallic mineral?

Back

A metallic mineral is a mineral that has a shiny appearance and conducts electricity, such as platinum or hematite.

Front

What is the significance of streak in mineral identification?

Back

Streak is the color of the powder left when a mineral is scraped across a porcelain plate, which can help identify the mineral.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has erupted onto the Earth's surface.