Elements, Compounds, and Mixtures

Front

What is the definition of a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

Give an example of a mixture found in everyday life.

Back

Salad is an example of a mixture, as it consists of various ingredients combined together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements are chemically bonded together.

Front

Is sugar (C12H22O11) an element or a compound?

Back

Sugar is a compound because it is made up of more than one type of element (carbon, hydrogen, and oxygen) chemically bonded together.

Front

What is the composition of air?

Back

Air is a mixture of gases, primarily nitrogen, oxygen, carbon dioxide, and other trace gases.

Front

How do particles behave when exposed to warmer temperatures?

Back

As particles are exposed to warmer temperatures, they gain energy and speed up.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, as it consists of two hydrogen atoms and one oxygen atom chemically bonded together.

Front

What is the term for a substance that cannot be broken down into simpler substances?

Back

An element.

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 or a bowl of mixed nuts.