Periodic Table

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

The atomic number tells you what?  READ THE ANSWERS CAREFULLY

• only the number of electrons
•  only the number of protons
• only the number of neutrons
• the number of both electrons and protons in an atom.

What does the atomic mass tell you? 

• Basically,the number of electrons and protons
• The number of neutrons
• Basically, the number of protons and neutrons
• The number of protons.

What are valence electrons?

• Any of an atom's electrons

• Electrons located on the first energy level

• Electrons not attached to any atom

• electrons located on the outer energy level

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What category is silicon (Si) a part of?

• Metal

• Nonmetal

• Metalloid

• Halogens

How many electrons does Barium (Ba) have?

• 13

• 2

• 71

• 56

All matter is made of .....

• energy 
• atoms 
• air
• chemistry

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Most of the mass of an atom is found in its _____.

• electron cloud

• nucleus

• atomic number

• empty space

Which item on this element square is the chemical symbol?

• Copper
• 29
• Cu
• 63.546