Atomic Structure

Front

What is the charge of an atom if it has the same number of electrons and protons?

Back

The atom is neutral.

Front

What is an atom called when it has a charge?

Back

An ion.

Front

What two subatomic particles contribute to the atomic mass of an atom?

Back

Protons and neutrons.

Front

If an atom has 5 protons and 4 electrons, what type of ion is it?

Back

A positive ion.

Front

Which subatomic particle has almost no mass?

Back

Electrons.

Front

What is the role of protons in an atom?

Back

Protons determine the atomic number and identity of the element.

Tags

NGSS.HS-PS1-7

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stability of the nucleus.

Front

How do you calculate the atomic mass of an element?

Back

By adding the number of protons and neutrons.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a charge due to an unequal number of protons and electrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.