Flashcard Atomic Structure

Front

What does the atomic number of an element represent?

Back

The number of protons in the nucleus.

Front

Which of the following best describes the atomic number?

Back

It is the same for all isotopes of an element.

Front

What are isotopes of an element?

Back

Atoms with the same number of protons but different numbers of neutrons.

Front

How is the atomic mass of an element calculated?

Back

By adding the number of protons and neutrons.

Front

Which of the following are subatomic particles?

Back

Protons, Neutrons, 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 mass of a proton compared to a neutron?

Back

Approximately equal.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.