Unit C Vocabulary Quiz (Part A)

To introduce or mix a substance into an otherwise pure substance to pollute.

When a pure substance has impurities introduced into it.

Impurities in a substance.

Any solid materials dissolved in water, typically while the water is in contact with earth materials. Dissolved solids are commonly metal ions like calcium, sodium, and magnesium.

Water that has been heated and recondensed to drive off mineral impurities. Distilled water may have a slightly acidic pH.

Water that comes from an underground spring or comes out of the ground on its own and is bottled.

Living (or once-living) organisms, including bacteria, viruses, and parasites, present in groundwater, surface water, land, or the atmosphere.

Chemicals such as fertilizers, gasoline, oil, heavy metals, or acids are introduced into groundwater, surface water, land, or the atmosphere.

A disease carried by water, such as cholera.

Any chemical or biological substance that pollutes water.

When water is polluted by chemical or biological substances.

Contamination by chemical or biological substances that make water unsafe for living things.

A state of matter where the atoms or molecules are farther apart than in a liquid and moving faster than in a liquid.

A state of matter where the atoms or molecules are packed less closely than a solid but more closely than a gas and moving more than a solid.

Atoms or molecules of a substance. All matter is made of particles that are in constant motion. Atoms are the building blocks of matter. Two or more similar or dissimilar atoms can combine to form a molecule.