Periodic Table Review

Vertical columns of elements

• Groups

• Periods

Horizontal rows of elements

• Groups

• Periods

The periodic table is arranged by increasing ______ ______, which is equal to the number of protons.

• atomic mass

• atomic number

If an element is in group number 15 you know it has _____ valence electrons.

• 1

• 2

• 5

• 15

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

You read the periodic table from left to right starting at the top left corner with Hydrogen, increasing the number of _______ by 1 each time you move over a square.

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS1-1

The most reactive group of metals is in group number _____.

• 1

• 2

• 17

• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The atomic number tells us the number of ____________?

• Neutrons
• Protons
• Electrons

Families or Groups are the vertical columns on the periodic table. How many Families/Groups are there?

• 18
• 7
• 12
• 20

Elements in the same family/group have similar _______________.

• Protons

• Physical and Chemical Properties

• Shape

• Size

The atomic mass is the ______________ + ____________ in the atom.

• neutrons + electrons
• protons + electrons
• protons + neutrons
• electrons