Periodic Table + The Elements

Front

What are the horizontal rows on the periodic table called?

Back

Periods

Front

What is the neutral particle in the nucleus of an atom?

Back

Neutron

Front

What is the total number of protons and neutrons in an atom's nucleus called?

Back

Atomic mass

Front

How is the number of electron shells in an atom determined?

Back

It is equal to the element's period number.

Front

Who created one of the first periodic tables using atomic mass?

Back

Mendeleev

Front

What are the vertical columns on the periodic table called?

Back

Groups

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the atomic mass number?

Back

It indicates the total number of protons and neutrons in an atom.