Atoms Elements Molecules

Front

What is Atomic Mass Number?

Back

Number of Protons and Neutrons

Front

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

Back

4

Front

How many electrons are found in a potassium atom?

Back

19

Front

What are the 3 particles that make up an atom?

Back

Protons, Neutrons, and Electrons

Front

What is the atomic mass of an element?

Back

The weighted average mass of an element's isotopes, typically expressed in atomic mass units (amu).

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of a neutron?

Back

No charge (neutral).