Elements, Compounds, Mixtures

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Each substance retains its own properties.

Front

What is an element?

Back

An element is a pure substance that consists of only one type of atom. Examples include hydrogen (H) and oxygen (O).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. For example, water (H2O) is a compound made of hydrogen and oxygen.

Front

How can you identify a mixture?

Back

A mixture can be identified by the presence of two or more different substances that can be separated by physical means.

Front

What is the difference between a pure substance and 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

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 where the components are not uniform and can be easily distinguished, such as a salad.

Front

What is an example of a mixture of elements?

Back

Brass is an example of a mixture of elements, specifically zinc and copper.

Front

What does it mean for a substance to be chemically bonded?

Back

Chemically bonded means that atoms are held together by chemical forces, forming a compound.

Front

What is a suspension?

Back

A suspension is a type of heterogeneous mixture where solid particles are dispersed in a liquid but will settle over time, like muddy water.