Atoms

Front

What are the positive particles of an atom called?

Back

Protons.

Front

What are the neutral particles in an atom that have no charge?

Back

Neutrons.

Front

What does the average atomic mass of an element represent?

Back

The weighted average mass of an atom's isotopes.

Front

How is the mass number of an atom defined?

Back

The total number of protons and neutrons in the nucleus.

Front

What particle moves around the nucleus of an atom?

Back

Electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the significance of the atomic number of an element?

Back

It represents the number of protons in the nucleus and defines the element.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.