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7th Grade Science > Chapter 3 Solids, Liquids, & Gases > Flashcards

Chapter 3 Solids, Liquids, & Gases Flashcards

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1
Q

solid

A

Has a definite shape and a definite volume

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2
Q

crystalline solid

A

Solids that are made up of crystals (repeating patterns)

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3
Q

amorphous solid

A

Solids that are made up of particles that are not arranged in a regular pattern

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4
Q

liquid

A

Has a definite volume but no shape of its own

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5
Q

fluid

A

A substance that flows

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6
Q

surface tension

A

The result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together

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7
Q

viscosity

A

A liquid’s resistance to flowing

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8
Q

gas

A

Has neither definite shape nor definite volume

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9
Q

Melting

A

The change in state from a solid to a liquid

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10
Q

Melting Point

A

The specific temperature where melting occurs

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11
Q

Freezing

A

The change of state from liquid to solid

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12
Q

Vaporization

A

The change from a liquid to a gas

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13
Q

Evaporation

A

Vaporization that takes place only at the surface of a liquid

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14
Q

Boiling

A

Occurs when a liquid changes to a gas below its surface as well as at the surface

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15
Q

Boiling Point

A

The temperature at which a liquid boils

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16
Q

Condensation

A

The opposite of vaporization, the change of state from a gas to a liquid

17
Q

Sublimation

A

occurs when the surface particles of a solid gain enough energy that they form a gas

Skipping the liquid state

18
Q

Pressure

A

The force of a gas pushing outward on the walls of its container

19
Q

Boyle’s Law

A

When the pressure of a gas at constant temperature is increased, the volume of the gas decreases
When the pressure is decreased, the volume increases

20
Q

Charles’s Law

A

When the temperature of a gas is increased at constant pressure, its volume increases
When the temperature of a gas is decreased, it volume decreases

7th Grade Science (4 decks)

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