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

Found in group one of the periodic table; highly reactive metal

• Alkaline Earth Metals

• Transition Metals

• alkali metals

• metalloids

Tags

NGSS.HS-PS1-1

Found in group two of the periodic table; very reactive

• Halogens

• Alkali Earth Metals

• metalloids (semimetals)

• alkali metals

Tags

NGSS.HS-PS1-1

Elements that occur in vertical columns on the periodic table.

• periods

• metalloids (semimetals)

• groups

• Proton

How many rows/periods are on the table?

• 4

• 5

• 6

• 7

How many groups/families are on the table?

• 15

• 16

• 17

• 18

What group number are the halogens? How many valence electrons do they have?

• 18, 7

• 1, 16

• 2, 17

• 17, 7

Tags

NGSS.HS-PS1-1

What group number are the noble gases?

• 17

• 18

• 14

• 15

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.