Physical Science

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What is a mixture?

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A mixture is a combination of two or more substances where each substance retains its own properties. Examples include fruit salad and sand and water.

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What is a solution?

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A solution is a special type of mixture where one substance is dissolved in another, such as salt in water.

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How can you separate a mixture using a filter?

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You can separate mixtures like sand and water using a filter, which allows the liquid to pass through while trapping the solid.

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What is the boiling point?

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The boiling point is the temperature at which a liquid changes into a gas. For example, water boils at 100 degrees Celsius.

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NGSS.MS-PS1-4

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What is a physical change?

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A physical change is a change in which the form or appearance of a substance changes, but its chemical composition remains the same. Example: Mixing ingredients for S’mores.

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What is a chemical change?

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A chemical change occurs when a substance transforms into a different substance with new properties. Example: Marshmallow burning when heated.

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NGSS.MS-PS1-2

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Can a mixture be separated?

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Yes, mixtures can be separated into their individual components using physical methods like filtering, magnetism, or evaporation.

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What is magnetism used for in separating mixtures?

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Magnetism can be used to separate magnetic materials, such as iron filings, from non-magnetic materials like sugar or sand.

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NGSS.MS-PS2-3

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What happens during the melting process?

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During melting, a solid changes into a liquid when it is heated to its melting point.

Tags

NGSS.MS-PS1-4

Front

What is the freezing point?

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The freezing point is the temperature at which a liquid turns into a solid. For example, water freezes at 0 degrees Celsius.

Tags

NGSS.MS-PS1-4

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