Periodic Table

Each column in the periodic table is called a _________ .

• period
• group
• cluster
• unit

All matter is composed of (contains) at least one element on the periodic table

• True
• False

Periods on the periodic table are __________.

• Horizontal Rows
• Vertical Columns

The atomic number tells you what?

• number of electrons in an ion

• number of protons + neutrons

• number of neutrons

• number of electrons and protons in a neutral atom.

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

How many neutrons are in a Gold atom?

• 79
• 196
• 118
• 275

How many electrons does a Copper atom have?

• 63
• 29
• 92
• 34

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons