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Defining Minerals Quiz - Multiple choice

9 Questions

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Defining Minerals Quiz - Multiple choice

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Questions and Answers

What is the streak of a mineral?

The color of the mineral under UV light

The color of the mineral when exposed to air

The color of the powder produced when dragged across a surface (correct)

The color of the mineral's surface

What is hardness in terms of minerals?

Ability to conduct electricity

Resistance to scratching (correct)

Resistance to breaking

Ability to change shape under pressure

Who created the Mohs scale of hardness?

Marie Curie

Isaac Newton

Friedrich Mohs (correct)

Albert Einstein

What is cleavage as related to minerals?

The way a mineral breaks along definite structural planes Signup and view all the answers

What is fracture in terms of minerals?

The property of a mineral breaking in a more or less random pattern Signup and view all the answers

What does it mean for a mineral to be inorganic?

It has never been alive and is not made up from plants or animals Signup and view all the answers

What is the significance of a mineral having a definite chemical composition?

It has a formula Signup and view all the answers

What causes many minerals to be a variety of colors?

Slight imperfections or impurities Signup and view all the answers

What does the term 'luster' refer to in minerals?

The way the mineral reflects light Signup and view all the answers

Study Notes

Mineral Properties

The streak of a mineral is the color of the powder produced when it is scratched on a porcelain plate.

Hardness

Hardness is a mineral's resistance to scratching.
Friedrich Mohs created the Mohs scale of hardness, which ranks minerals from 1 (softest) to 10 (hardest) based on their scratch resistance.

Cleavage and Fracture

Cleavage refers to the way a mineral breaks along flat surfaces, producing smooth, shiny surfaces.
Fracture refers to the way a mineral breaks in a more random, uneven pattern.

Composition and Origin

A mineral is inorganic, meaning it is not derived from living organisms.
A mineral has a definite chemical composition, which is essential to its identity and properties.

Color and Appearance

Many minerals exhibit a variety of colors due to the presence of impurities or defects in their crystal structure.
Luster refers to the way a mineral reflects light, which can range from metallic to glassy to earthy.

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Description

Test your knowledge on the defining characteristics of minerals with this quiz. Learn about their natural occurrence, inorganic nature, and solid form.