Atom Review

Where is almost all the mass of an atom located?

• in the electrons

• in the neutrons

• in the nucleus

• in the protons

Which particles are located in the nucleus of an atom?

• protons and neutrons

• photons and clingons

• protons and electrons

• electrons and neutrons

Protons have a ________ charge.

Electrons have a ________ charge.

Neutrons have a ________ charge.

The atomic number tells how many ________ are in the nucleus.

Where are electrons located in an atom?

• In the central nucleus

• In the electron clouds surrounding the nucleus

• Within the neutron

• In the outermost energy level

What is the atomic number of an element?

• The number of protons in an element

• The number of protons and neutrons in an element

• The number of total electrons in a neutral atom

• The identity of an element

What does it mean for an atom to be electronically neutral?

• It has an equal number of protons and electrons

• It has an equal number of protons and neutrons

• It has an equal number of electrons and neutrons

• It has a total charge of zero

What are the maximum number of electrons that go on the first 3 energy levels?

• 2,4,16
• 2,8,18
• 4,8,12
• 3,4,6