03 Classifying Matter

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

How can matter be classified?

Back

Matter can be classified as elements, compounds, homogeneous mixtures, or heterogeneous mixtures.

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 pure substance formed when two or more elements chemically combine in fixed proportions.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition, such as a salad.

Front

What is an example of a pure substance?

Back

An example of a pure substance is distilled water or table salt (NaCl).

Front

What is the difference between a mixture and a compound?

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A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed from two or more elements that are chemically bonded.

Front

What is the classification of pizza?

Back

Pizza is classified as a heterogeneous mixture.

Front

What is the classification of limestone (CaCO3)?

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Limestone (CaCO3) is classified as a pure substance and a compound.