Atoms Atoms Atoms

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 the three main particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a neutron?

Back

Neutral (no charge).

Front

What is the charge of an electron?

Back

Negative.

Tags

NGSS.MS-PS2-3

Front

Where are protons located in an atom?

Back

In the nucleus.

Front

Where are electrons located in an atom?

Back

In the electron cloud surrounding the nucleus.

Front

What is the nucleus of an atom?

Back

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

Front

What is the mass of a proton compared to an electron?

Back

A proton is much heavier than an electron.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is an element?

Back

A pure substance made of only one type of atom.