Structure of the Atom - Semester Review

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What is the area around the nucleus of an atom where electrons are most likely to be found called?

Back

The area is called the electron cloud.

Front

If a neutral atom has 8 protons, how many electrons does it have?

Back

It has 8 electrons.

Front

What are the three subatomic particles?

Back

The three subatomic particles are proton, neutron, and electron.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

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 role of neutrons in the nucleus?

Back

Neutrons help stabilize the nucleus by reducing repulsion between protons.

Front

What is an ion?

Back

An ion is an atom that has gained or lost one or more electrons, resulting in a charge.

Front

What is atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.