States of Matter

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What is matter?

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Matter is anything that has mass and takes up space. It includes everything around us, from the air we breathe to the water we drink.

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NGSS.MS-PS1-4

NGSS.MS-PS1-5

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What are the three states of matter?

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The three states of matter are solids, liquids, and gases.

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What is a solid?

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A solid is a state of matter characterized by a definite shape and volume, where particles are closely packed together.

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NGSS.MS-PS1-4

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What is a liquid?

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A liquid is a state of matter that has a definite volume but takes the shape of its container, with particles that are close together but can move past one another.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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What is a gas?

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A gas is a state of matter that has neither a definite shape nor a definite volume, with particles that are far apart and move freely.

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NGSS.MS-PS1-4

NGSS.MS-PS3-1

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What happens to matter when it is heated?

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When matter is heated, its particles gain energy, which can lead to changes in state, such as from solid to liquid (melting) or from liquid to gas (evaporation).

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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What is melting?

Back

Melting is the process by which a solid turns into a liquid when it is heated to its melting point.

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NGSS.MS-PS1-4

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What is freezing?

Back

Freezing is the process by which a liquid turns into a solid when it is cooled to its freezing point.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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What is condensation?

Back

Condensation is the process by which a gas turns into a liquid when it is cooled.

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NGSS.MS-ESS2-4

NGSS.MS-PS1-4

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What is evaporation?

Back

Evaporation is the process by which a liquid turns into a gas when it is heated.

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NGSS.MS-PS1-4