Chapter 7 - Section 2 Flashcards

1
Q

element

A

A substance that cannot be broken down into other substances.

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2
Q

compound

A

A substance in which two or more elements are chemically joined.

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3
Q

physical property

A

Any characteristic of a substance that can be observed or measured without changing the composition of the substance.

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4
Q

chemical property

A

Any property of a substance that produces a change in the composition of matter.

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5
Q

viscosity

A

The resistance of a liquid to flowing.

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6
Q

silica

A

A material found in magma that is formed from the elements oxygen and silicon.

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7
Q

pahoehoe

A

A hot, fast-moving type of lava that hardens to form smooth, ropelike coils.

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8
Q

aa

A

A slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe.

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9
Q

Which has a higher viscosity, a fast-flowing liquid or a slow-flowing liquid?

A

slow-flowing liquid

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10
Q

What two main factors affect magma’s viscosity?

A

the magma’s silica content and temperature

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