Elements, Compounds, Mixtures

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

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How can you identify a mixture?

Back

A mixture can be identified if it contains more than one kind of molecule.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

What distinguishes a pure substance from a mixture?

Back

A pure substance has a uniform and definite composition, while a mixture contains two or more substances that can vary in composition.

Front

Can a mixture be separated by physical means?

Back

Yes, mixtures can be separated by physical means such as filtration, distillation, or evaporation.

Front

What is an example of a mixture?

Back

An example of a mixture is salad, which contains various ingredients that retain their individual properties.

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What is an example of an element?

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An example of an element is oxygen (O), which consists of only one type of atom.

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What is an example of a compound?

Back

An example of a compound is water (H2O), which is made of hydrogen and oxygen atoms chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

What happens to the properties of substances in a mixture?

Back

The properties of substances in a mixture remain unchanged; they do not lose their individual characteristics.