Ch 3 Lesson 1 & 2 Vocab Flashcard Review

Front

Elements in the same vertical column of the periodic table; also called a family.

Back

Group

Front

Horizontal row of elements in the periodic table

Back

Period

Front

Arrangement of elements showing repeating properties

Back

Periodic Table

Front

Average mass of all isotopes of an element.

Back

Atomic Mass

Front

Sum of protons and neutrons in an atom's nucleus

Back

Mass Number

Front

Atom with the same protons but different neutrons from others of the same element.

Back

Isotope

Front

Protons in an atom's nucleus

Back

Atomic Number

Front

Small particle in the atom's nucleus, no charge

Back

Neutron

Front

Region of an atom where electrons of the same energy are likely found.

Back

Energy Level

Front

Positively charged particles in an atom's nucleus

Back

Proton