Atoms and the Periodic Table

Front

An element is identified by

Back

its number of protons.

Front

How many protons does Oxygen (O) have?

Back

8.

Front

All matter is made of _________.

Back

atoms.

Front

The number of protons in an atom is called the .....

Back

Atomic Number.

Front

In the modern periodic table, elements are arranged by:

Back

atomic number.

Front

What is an atom?

Back

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

Front

What are protons?

Back

Positively charged particles found in 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.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom that contribute to its mass.