Atoms: Protons, Neutrons, and Electrons R. Science

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

+1 (positive charge)

Front

What is the charge of a neutron?

Back

0 (neutral charge)

Front

What is the charge of an electron?

Back

-1 (negative charge)

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus.

Front

Where are electrons located in an atom?

Back

In the orbitals around the nucleus.

Front

What is the mass of a proton compared to an electron?

Back

A proton is approximately 1836 times more massive than an electron.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

In a neutral atom, what is the relationship between protons and electrons?

Back

They are equal in number.

Front

What determines the identity of an element?

Back

The number of protons in its nucleus.