Periodic Table and Lesson 1 Vocab

The periodic table is organized by ________________.

• atomic number

• mass

• periods

• classes

The atomic number tells the number of _____________ and ________________.

• protons and neutrons

• protons and electrons

• electrons and neutrons

The big letter representing the elements on the periodic table is called the _______________.

• atomic number

• atomic mass

• chemical symbol

• Periodic Law

The atomic mass of elements is measured in ___________.

• atomic mass units (amu)

• pounds

• ounces

• kilograms

Atomic Mass = __________ + __________.

• protons, neutrons

• neutrons, electrons

• protons, electrons

• protons, atomic number

Properties of elements change as you move from top to bottom.

• True

• False

A row on the periodic table is called a ___________.

• family

• group

• class

• period

Columns on the periodic table are called ___________.

• groups

• families

• periods

• classes

Elements with the same chemical and physical properties are in the same column.

• True

• False

Elements with the same chemical and physical properties are in the same period.

• True

• False