Atomic Structure

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 does the atomic mass of an element represent?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What charge do protons carry?

Back

Protons have a positive charge.

Front

What charge do electrons carry?

Back

Electrons have a negative charge.

Front

What is the role of neutrons in an atom?

Back

Neutrons are neutral particles that contribute to the atomic mass and stability of the nucleus.

Front

How can you identify an element?

Back

An element can be identified by the number of protons it has, which is its atomic number.

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

How many protons are in a Carbon atom?

Back

A Carbon atom has 6 protons.

Front

What is an isotope?

Back

Isotopes are variants of the same 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 the nucleus of an atom.