Build an Atom PhET Simulation Questions

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and 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

How do you determine the mass number of an atom?

Back

Add the number of protons and neutrons.

Front

What is an ion?

Back

An atom that has gained or lost electrons, resulting in a net charge.

Front

What is a neutral atom?

Back

An atom with an equal number of protons and electrons.

Front

What determines the identity of an element?

Back

The number of protons in the nucleus.

Front

What is the role of electrons in chemical bonding?

Back

Electrons in the outer shell (valence electrons) are involved in forming bonds between atoms.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.