Atoms and the Periodic Table

Front

What is the Periodic Table?

Back

A chart that shows all the elements scientists have discovered/created.

Front

What does the atomic mass of an element represent?

Back

The average mass of an atom of an element, measured in atomic mass units (amu).

Front

How many neutrons does Sodium (Na) have?

Back

12

Front

How many protons does Oxygen (O) have?

Back

8

Front

How many electrons does Potassium (K) have?

Back

19

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.