Physical Science

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What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often involving a change in energy, color, or the production of gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or freezing.

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What is evaporation?

Back

The process of turning from liquid into vapor, often used to separate a solute from a solution.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

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What is a solution?

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A homogeneous mixture of two or more substances where one substance (solute) is dissolved in another (solvent).

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What is a mixture?

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A combination of two or more substances that retain their individual properties and can be separated by physical means.

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What is a solute?

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The substance that is dissolved in a solution.

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What is a solvent?

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The substance in which the solute is dissolved, usually present in a greater amount.

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What is the difference between a physical and chemical change?

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A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-5

Front

What happens during a chemical reaction?

Back

Atoms rearrange to form new substances, often accompanied by energy changes, color changes, or gas production.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is filtering?

Back

A method of separating solids from liquids or gases using a barrier that allows only certain particles to pass through.