Atoms and Molecules

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Tags

NGSS.MS-PS1-1

Front

What are molecules?

Back

Molecules are formed when two or more atoms bond together.

Tags

NGSS.MS-PS1-1

Front

What are the three main particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What is the nucleus of an atom?

Back

The central region of an atom that contains protons and neutrons.

Tags

NGSS.MS-PS1-1

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Tags

NGSS.HS-PS2-4

Front

What is the charge of neutrons?

Back

Neutrons have no charge (they are neutral).

Front

What is the electron cloud?

Back

The region around the nucleus where electrons are likely to be found.

Front

What is a compound?

Back

A substance formed when two or more different elements chemically bond together.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms.