atoms, elements, molecules and compounds vocabulary

Front

What is an atom?

Back

The smallest unit of an element, consisting of protons, neutrons, and electrons.

Front

What is an element?

Back

A pure substance made of only one type of atom.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a compound?

Back

A substance formed when two or more different types of atoms bond together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout.

Front

What is a heterogeneous mixture?

Back

A mixture that consists of visibly different substances or phases.

Front

What is the difference between an element and a compound?

Back

An element consists of one type of atom, while a compound consists of two or more different types of atoms.

Front

What is a chemical bond?

Back

The force that holds atoms together in a molecule or compound.

Front

What is a proton?

Back

A positively charged particle found in the nucleus of an atom.