12/5/24 Practice assignment

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What is a Physical Change?

Back

A change in the form or appearance of a substance that does NOT change the substance into anything new.

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What is Mass?

Back

A measure of the amount of matter in an object, typically measured in grams or kilograms.

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What does Exothermic mean?

Back

It refers to a process or reaction that releases energy, usually in the form of heat.

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What is a Reactant?

Back

A substance that takes part in and undergoes change during a chemical reaction.

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What is a Chemical Change?

Back

A process where two or more substances join to form new substances with new chemical properties.

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What is Density?

Back

The mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

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What is a Product?

Back

A substance that is formed as a result of a chemical reaction.

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What is the difference between Physical Change and Chemical Change?

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Physical change alters the form of a substance without changing its identity, while chemical change results in the formation of new substances.

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What is Thermal Energy?

Back

The total energy of all the particles in a substance, related to temperature.

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What is the Law of Conservation of Mass?

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In a chemical reaction, mass is neither created nor destroyed; it is conserved.