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

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1

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.

The atoms we study in 6th grade are neutral, which means they have the same number of

• protons and electrons
• protons and neutrons
• electrons and neutrons

What does the 6 represent?

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

Tags

NGSS.HS-PS1-1

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

• groups

• families

• periods

• atomic numbers

how many rows are on the table

• 4

• 5

• 6

• 7

how many groups/families are on the table

• 15

• 16

• 17

• 18

what is the name of group number 1

• halogens

• noble gases

• alkali

• alkaline earth

Tags

NGSS.HS-PS1-1