Mineral properties and tests 6th grade

Front

What is a mineral?

Back

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

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What is luster in minerals?

Back

Luster refers to the way a mineral reflects light, which can be described as metallic, glassy, dull, etc.

Front

What does the hardness test measure in minerals?

Back

The hardness test measures a mineral's resistance to being scratched.

Front

What is density in the context of minerals?

Back

Density is the mass of a mineral divided by its volume, indicating how heavy it is for its size.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What is fracture in minerals?

Back

Fracture is when a mineral breaks in an irregular or rough manner, not along flat surfaces.

Front

Why is color not a reliable test for identifying minerals?

Back

Color can vary widely among different samples of the same mineral due to impurities, making it less reliable.

Front

What is the significance of the streak test?

Back

The streak test determines the color of a mineral in powdered form, which can be more consistent than the color of the mineral itself.

Front

What is the purpose of the acid test in mineral identification?

Back

The acid test checks for the presence of carbonate minerals, which fizz when exposed to acid.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale from 1 to 10 used to rank the hardness of minerals, with talc being the softest and diamond the hardest.