Periodic Table

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does an element in Group 1 have?

Back

1

Front

How do you calculate the number of neutrons in an atom?

Back

Mass - Atomic number = Neutrons

Front

What are the vertical columns on the periodic table called?

Back

Groups

Front

What do the vertical columns on the periodic table indicate?

Back

The number of valence electrons (electrons in the outermost shell).

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

What is the significance of the periodic table's periods?

Back

Periods indicate the number of electron shells an atom has.

Front

What group does Beryllium belong to?

Back

Group 2

Front

What are metals, nonmetals, and metalloids?

Back

Metals are elements that are good conductors of heat and electricity; nonmetals are poor conductors; metalloids have properties of both.