S8P1 Review

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What are physical properties of matter?

Back

Physical properties are characteristics that can be observed or measured without changing the substance's chemical identity. Examples include density, color, boiling point, and melting point.

Tags

NGSS.MS-PS1-4

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Tags

NGSS.MS-PS1-4

Front

What is a chemical change?

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A chemical change occurs when a substance transforms into a different substance with different properties. This often involves a chemical reaction.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³). It indicates how much matter is packed into a given space.

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What is boiling point?

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The boiling point is the temperature at which a liquid turns into vapor. It varies for different substances and is influenced by atmospheric pressure.

Tags

NGSS.MS-PS1-4

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What is malleability?

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Malleability is the ability of a substance to be deformed or shaped under pressure, often by hammering or rolling, without breaking.

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What is a neutron?

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A neutron is a subatomic particle found in the nucleus of an atom that has no electric charge.

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What is a proton?

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A proton is a positively charged subatomic particle found in the nucleus of an atom. The number of protons determines the element's identity.

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What is an electron?

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An electron is a negatively charged subatomic particle that orbits the nucleus of an atom. Electrons play a key role in chemical bonding.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS2-3

Front

What is an element?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is made up of only one type of atom.