Atoms and the Periodic Table

Front

In the modern periodic table, elements are arranged by:

Back

atomic number

Front

The amount of matter in an object (like weight) is its...

Back

mass

Front

An electron has a _________ charge

Back

negative

Front

How many protons does Oxygen (O) have?

Back

8

Front

What is the symbol for Krypton?

Back

Kr

Front

What is an atom?

Back

The basic unit of a chemical element.

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.