Atoms and Molecules

Front

What is an atom?

Back

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

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What are molecules?

Back

Molecules are two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Tags

NGSS.MS-PS1-1

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Front

What charge do neutrons have?

Back

Neutrons have no charge (they are neutral).

Front

What happens to atoms and molecules when matter is heated?

Back

They move faster.

Tags

NGSS.MS-PS1-4

Front

What is the state of matter where particles are tightly packed and vibrate in place?

Back

Solid.

Front

What is the state of matter where particles are close together but can flow?

Back

Liquid.

Front

What is the state of matter where particles are far apart and move freely?

Back

Gas.