Atoms and Subatomic Particles

What is the smallest unit of an element that retains the chemical properties of that element?

• molecule

• atom

• compound

• ion

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

• protons, neutrons, and positrons

• protons, electrons, and photons

• protons, neutrons, and quarks

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

Which subatomic particle has a positive charge?

• electron

• neutron

• photon

• proton

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• photon

Which subatomic particle has no charge?

• proton

• electron

• photon

• neutron

What is the center of an atom called?

• nucleus

• proton

• electron cloud

• neutron

Tags

NGSS.MS-PS1-1

Where can you find electrons?

• in the energy levels surrounding the nucleus

• in the nucleus

• in an outlet

• in lightning

All atoms, except _________, have neutrons and protons in their nucleus.

• oxygen

• Helium

• Hydrogen

• Lithium

Tags

NGSS.MS-PS1-1