Front

What is a positively charged particle in an atom?

Back

Proton

Front

What does the atomic number represent?

Back

The number of protons or electrons in an atom.

Front

How is atomic weight defined?

Back

The total number of protons and neutrons in the nucleus of an atom.

Tags

NGSS.HS-PS1-7

Front

What is a neutral charged particle in an atom?

Back

Neutron

Front

What are the three main subatomic particles that make up an atom?

Back

Protons, electrons, and neutrons.

Front

What is the charge of an electron?

Back

Negative.

Tags

NGSS.HS-PS2-4

Front

What is the charge of a proton?

Back

Positive.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus by offsetting the repulsive forces between protons.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-8

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

How do you calculate the mass number of an atom?

Back

By adding the number of protons and neutrons.