Atomic Structure

Front

What determines which element an atom is?

Back

The number of protons in the atom.

Front

What is true about an atom?

Back

Atoms are mostly empty space.

Front

What is the nucleus of an atom made of?

Back

The nucleus is made of protons and neutrons.

Front

How can an atom be best described?

Back

An atom is a positive nucleus surrounded by a cloud of negative charges.

Front

Which particle's mass is so small that it is not counted?

Back

The mass of an electron is so small that it is not counted.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an atom's isotopes.

Front

What is an isotope?

Back

Isotopes are atoms of the same element with different numbers of neutrons.