Particles in an Atom

Front

What three particles are found in an atom?

Back

Protons, neutrons, and electrons.

Front

Which two particles are found in an atom's nucleus?

Back

Protons and neutrons.

Front

Which two particles in a neutral atom are equal in number?

Back

Protons and electrons.

Front

What two particles account for almost all of the mass in an atom?

Back

Protons and neutrons.

Front

The very small, dense center of the atom is called the ______________.

Back

Nucleus

Front

The positively charged particle of an atom is called a ______________.

Back

Proton

Front

A particle of an atom that moves rapidly in the cloudlike region around the nucleus is called a ______________.

Back

Electron

Front

A particle with no charge is a ______________.

Back

Neutron

Front

The atomic number tells the number of ______________ in the nucleus of every atom of an element.

Back

Protons

Front

The sum of protons and neutrons in the nucleus of an atom is the ______________.

Back

Mass number