Which force holds protons and neutrons together in the atom nucleus?

• electric force

• gravity

• strong nuclear force

• weak nuclear force

Tags

NGSS.HS-PS1-8

Which of these is an alpha particle?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-8

Carbon-14 and carbon-12 have the same number of protons but a different number of neutrons. These different forms of the same element are called

• radioactive

• isotopes

• nuclei

• tracers

The mass number of a nucleus is equal to ______.

• the number of protons plus the number of neutrons

• the number of electrons

• the number of protons

• the number of neutrons

Tags

NGSS.MS-PS1-1

What type of nuclear decay is represented in this illustration?

• beta decay

• gamma radiation

• alpha decay

• nuclear fusion

Tags

NGSS.HS-PS1-8

Which happens in a nucleus during gamma decay?

• The number of protons increases.

• The number of neutrons increases.

• The number of protons remains the same.

• The total number of neutrons plus neutrons decreases.

Tags

NGSS.HS-PS1-8

When a neutron turns into a proton in a nucleus, what sort of particle is emitted?

• alpha

• beta

• gamma

• photon

Tags

NGSS.HS-PS1-8

Gamma rays _________.

• have no mass and no charge

• have mass but no charge

• have no mass but have charge

• have mass and charge

Tags

NGSS.HS-PS4-3

What are found in the nucleus of an atom?

• protons and electrons

• electrons and neutrons

• protons, neutrons, and electrons

• protons and neutrons

Tags

NGSS.HS-PS1-8

Protons do not repel each other in the nucleus because of the ______.

• weak force

• electric force

• strong force

• gravitational force