A Mineral's Hardness Is Determined by the Number and the Strength

question 84

Multiple Choice

A mineral's hardness is determined by the number and the strength of chemical bonds, but how is it actually determined?

• A) by weighing it on a Mohs scale.
• B) by whether or not it cleaves.
• C) by looking at its streak.
• D) by its resistance to scratching or abrasion by other materials of known hardness.

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Definitions:

Cephalocaudal

A principle of development describing the pattern in which growth occurs from the head downwards through the body.

Proximal-distal

A pattern of development or movement that starts from the center or core of the body and moves outwards to the extremities.

Preschooler

A child typically between the ages of 3 and 5 years old, who is in the developmental stage prior to entering kindergarten.

Bodily Harm

Physical injury, damage, or harm inflicted on a person's body by an external force or substance.