Physical Science: Midterm Review (Pt. 2)

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What is a Chemical Reaction?

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A process where substances (reactants) undergo a transformation to form new substances (products) with different properties.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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What is a Physical Change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

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What is the Law of Conservation of Mass?

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The total amount of matter (atoms) remains the same before and after a chemical reaction.

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NGSS.MS-PS1-5

Front

What is a Chemical Change?

Back

A process that results in the formation of new substances with different properties from the original substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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What is Magnetism?

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The ability of a substance to attract iron or produce a magnetic field.

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NGSS.MS-PS2-5

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How is Density calculated?

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Density = Mass / Volume.

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What is the formula for calculating density?

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Density (g/cm³) = Mass (g) / Volume (cm³).

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What is an example of a Physical Change?

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Melting ice is a physical change because it changes state from solid to liquid without changing its chemical composition.

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NGSS.MS-PS1-4

Front

What is an example of a Chemical Change?

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Burning wood is a chemical change because it transforms into ash and smoke, creating new substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the properties of a substance during a Chemical Change?

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The properties change because new substances with different characteristics are formed.

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NGSS.MS-PS1-2