What is the name of the subatomic particle with one negative charge?

• electron

• neutron

• proton

• quark

What is the smallest particle of an element that still represents that element?

• atom

• isotope

• proton

• quark

What are the tiny particles that make up protons and neutrons?

• electrons

• neutrons

• protons

• quarks

What is the subatomic particle with a neutral or no charge?

• electron

• neutron

• proton

• quark

What is the area around the nucleus that electrons are likely to be found?

• electron orbits

• electron rings

• electron circles

• nucleus

What is the name of the particle in an atom with one positive charge?

• electron

• neutron

• proton

• quark

What are isotopes?

• different element with the same number of electrons

• same element with a different number of electrons

• same element with a different number of neutrons

• different element with the same number of neutrons

A substance made up of only one type of atom is called a(n)

• compound

• molecule

• element

• nucleus

The mass number or average atomic mass is

• the number of protons + the number of electrons

• the number or protons - the number of electrons

• the number of protons + the number of neutrons

• the number of protons - the number of neutrons

Ions form because atoms either gain or lose

• electrons

• protons

• neutrons

• quarks