The Periodic Table

Horizontal rows on the periodic table are called

• Periods

• Metals

• Groups

• Families

The Atomic number for each element is:

• The number of neutrons

• The number of protons

• The number of electrons

• The number of protons and neutrons

The atomic mass is _________________ the atomic number

• equal to

• less than

• greater than

• more important

The atomic mass of an element is the:

• Number of protons

• Number of protons and electrons

• Number of neutrons

• Number of protons and neutrons

The largest majority of elements on the periodic table are:

• Gases

• Nonmetals

• Metalloids

• Metals

Groups are also called families because:

• They have the same atomic numbers

• They are all metals or non metals

• They share similar properties

• They argue often about doing chores

The periodic table is organized by

• Atomic number

• Alphabetical

• Date of discovery

• Importance

Which element has only one proton and one valence electron?

• Oxygen (O)

• Hydrogen (H)

• Helium (He)

• Lithium (Li)

Which family is stable and unreactive (won't bond with other elements)?

• Halogens

• Alkali Metals

• Transition Metals

• Noble Gases

How many periods are there in the periodic table?

• 7

• 18

• 118

• None