Elements, Compounds, Mixtures

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together.

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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 elements are chemically bonded together.

Front

How is brass classified?

Back

Brass is classified as a mixture because it is made of zinc and copper, which are not chemically combined.

Front

What does the symbol 'Fe' represent?

Back

The symbol 'Fe' represents the element iron.

Front

What is a homogeneous mixture?

Back

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

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What is a heterogeneous mixture?

Back

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

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What is the difference between a mixture and a compound?

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A mixture is made of two or more substances that retain their individual properties, while a compound is a substance formed from two or more elements that lose their individual properties.

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What is an example of a mixture of elements?

Back

An example of a mixture of elements is a mixture of iron and sulfur.

Front

What is an example of a compound?

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