The 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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

Which is an electron?

• A
• B
• C

Which is a proton?

• A
• B
• C

Which is a neutron?

• A
• B
• C

how many groups/families are on the table

• 15

• 16

• 17

• 18