Atoms

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

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Tags

NGSS.MS-PS1-5

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element.

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an atom's isotopes, usually measured in atomic mass units (amu).

Tags

NGSS.HS-PS1-7

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are located in the nucleus of an atom.

Front

True or False: Electrons are found in the nucleus of an atom.

Back

False. Electrons orbit the nucleus.

Front

How many protons does Oxygen have?

Back

Oxygen has 8 protons.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral.