Atoms, Elements, Molecules, Compounds, Mixtures, & Solutions

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three main particles that make up an atom?

Back

Protons, neutrons, and electrons.

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 molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is a compound?

Back

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

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that do not chemically combine and can be separated.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).

Front

What is the atomic number of an element?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does an electron have?

Back

An electron has a negative charge.