Atoms and Molecules Practice

Front

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

Back

Neutrons

Front

What is the total number of atoms in an ammonia (NH3) molecule?

Back

4

Front

What part of an atom is negatively charged?

Back

Electrons

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the basic building block of all matter?

Back

Atoms

Front

What are the positively charged particles in an atom?

Back

Protons

Front

What is the center of an atom called?

Back

Nucleus

Front

What is the charge of an electron?

Back

Negative

Front

What is the charge of a proton?

Back

Positive

Front

What is the smallest unit of a chemical element?

Back

Atom