Intro to Matter Unit Review

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

• electrons, photons, and neutrinos

• protons, neutrons, and positrons

• protons, electrons, and quarks

• protons, neutrons, and electrons

What is the charge of a proton?

• +1

• -1

• 0

• +2

What is the charge of an electron?

• -1

• +1

• 0

• -2

What is the charge of a neutron?

• 1

• 2

• -1

• 0

Label the diagram with the correct subatomic particles.

a

b

c

Electron

Neutron

Proton

Tags

NGSS.MS-PS1-1

Which subatomic particle determines the atomic number of an element?

• electron

• neutron

• photon

• proton

Which 2 subatomic particles contribute to the mass of an atom?

• protons and electrons

• neutrons and electrons

• protons and neutrons

Label each subatomic particle in the table.

a

b

c

Proton

Neutron

Electron

What are the energy levels in a Bohr diagram called?

• electron shells

• nuclear rings

• neutrons

• protons

How many electrons can the first energy level hold?

• 6

• 2

• 4

• 8