Atomic Structure

Front

What must be true for an atom to be neutral?

Back

The atom has the same number of protons and electrons.

Front

What are subatomic particles that are neutral in charge?

Back

Neutrons.

Front

What determines the identity of an element?

Back

The number of protons.

Front

If an element has a mass number of 11 and an atomic number of 5, how many neutrons does it have?

Back

6.

Front

What is the mass number?

Back

The number of protons and neutrons in the nucleus.

Front

What are protons?

Back

Positively charged subatomic particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged subatomic particles that orbit the nucleus of an atom.

Front

What is an atomic number?

Back

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

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.