Chemistry EOG Review

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together. Example: Water (H2O) is a compound made of hydrogen and oxygen.

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What is sodium chloride commonly known as?

Back

Sodium chloride is commonly known as table salt.

Front

How can you identify a mixture?

Back

A mixture can often be identified by the presence of different colored crystals or components that can be separated physically.

Front

What is the smallest unit of an element?

Back

The smallest unit of an element that retains its properties is an atom.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Example: Gold (Au) is an element.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Example: Salad is a mixture of different vegetables.

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What is a solution?

Back

A solution is a homogeneous mixture where one substance (solute) is dissolved in another (solvent). Example: Saltwater is a solution of salt in water.

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What is the difference between a compound and a mixture?

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A compound is formed by a chemical reaction and has a fixed composition, while a mixture is a physical combination of substances that can vary in composition.

Front

What is a pure substance?

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A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

What happens when an acid reacts with a carbonate?

Back

When an acid reacts with a carbonate, it produces carbon dioxide gas, water, and a salt.