Subatomic Particles- Unit 1 Review Playlist

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons, and is responsible for most of the atom's mass.

Front

How many electrons does a neutral atom of Krypton have?

Back

A neutral atom of Krypton has 36 electrons.

Front

How many electrons does a neutral atom of sodium have?

Back

A neutral atom of sodium has 11 electrons.

Front

How many protons are present in phosphorus?

Back

Phosphorus has 15 protons.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What determines the identity of an element?

Back

The number of protons in the nucleus determines the identity of an element.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which defines the element.