Atoms

Front

The atomic mass is the

Back

number of protons and neutrons inside the nucleus

Front

All matter is made of _________.

Back

atoms

Front

If an atom has 3 electrons, how many protons does it have?

Back

3

Front

The horizontal row on the periodic table is called a

Back

period

Front

A vertical column is called...

Back

group

Front

What did Dmitri Mendeleev invent?

Back

Periodic Table

Front

What is at the center of every atom?

Back

A nucleus

Front

The positively charged particles of an atom are the ________.

Back

protons

Front

The particles with no charge in an atom are the _______.

Back

neutrons

Front

What does the nucleus of an atom contain?

Back

Protons and neutrons