Unit 2 Review: Atoms

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What particles have a negative charge?

Back

Electrons are the particles that have a negative charge.

Front

What is the formula for calculating atomic mass?

Back

Atomic mass is calculated by adding the number of protons and neutrons in an atom.

Front

What determines an atom's identity?

Back

An atom's identity is determined by the number of protons it contains.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting a nucleus into two smaller nuclei, releasing energy.

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge; they are neutral.

Front

What is the relationship between protons and atomic number?

Back

The atomic number of an element is equal to the number of protons in its nucleus.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.