Unit 2

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Mixture

Back

Two or more substances that are together in the same place, but their atoms are not chemically combined.

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Colloid

Back

A heterogeneous mixture containing small, undissolved particles that do not separate or settle out if the mixture is undisturbed.

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Suspension

Back

A suspension is a mixture in which solid particles are suspended in a liquid or gas but can settle over time.

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Reactant

Back

A reactant is a substance that is present at the start of a chemical reaction.

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Product

Back

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

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Compound

Back

A compound is a substance made up of two or more different elements that are chemically combined in a fixed ratio.

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Matter

Back

Matter is anything that has mass and takes up space. This includes solids, liquids, gases, and even plasma.

Front

Mass

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms. It does not change regardless of location, such as on Earth or the Moon.

Front

Volume

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Volume is the amount of space an object or substance occupies. It can be measured in liters, milliliters, or cubic centimeters.

Front

Density

Back

Density is a measure of how much mass is contained in a given volume. It is calculated by dividing mass by volume (density = mass/volume).