Periodic Table and Elements

Periods on the periodic table are

• Vertical
• Horizontal

Groups on the periodic table are

• Vertical
• Horizontal

There are ____ periods on the periodic table.

• 3
• 5
• 7
• 18

There are _____ groups on the periodic table.

• 3
• 5
• 7
• 18

Tells you the number of protons in the nucleus of each atom of that element.

• Atomic Mass
• Atomic Number
• Chemical Symbol
• Chemical Formula

The mass of an atom in atomic mass units.

• Atomic Mass
• Atomic Number
• Chemical Symbol
• Chemical Formula

a one-, two-, or three-letter abbreviation of its English name or Latin name.

• Atomic Mass
• Atomic Number
• Chemical Symbol
• Chemical Formula

Today, the number of known elements is ____

• 35
• 70
• 105
• 118

Atomic number ___________ by one from left to right in each row of the periodic table.

• Decreases
• Increases
• Stays the same

Almost all of the elements on the left side of the periodic table are _______.

• Non-metals
• Metals
• Metalloids