Periodic Table Review

Vertical columns of elements that DO share chemical properties (react the same) because they have the same number of VALENCE ELECTRONS in their outer shells.

• Groups

• Periods

Horizontal rows of elements that share the same number of ENERGY LEVELS but DO NOT share chemical properties.

• Groups

• Periods

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

• atomic mass

• atomic number

As you go down the Periodic Table the size and mass of the atoms _________.

• increases

• decreases

• cannot be determined

Tags

NGSS.HS-PS1-1

The period number tells you the number of ______ _______.

• valence electrons

• energy levels

The group number tells you the number of _______ ________.

• valence electrons

• energy levels

Tags

NGSS.HS-PS1-1

The ______ are located on the left side of the zig-zag 'staircase' on the Periodic Table. (except for Hydrogen)

• metals

• non-metals

• metalloids

The ___________ are located on the right side of the zig-zag 'staircase' on the Periodic Table (except for Hydrogen)

• metals

• non-metals

• metalloids

Tags

NGSS.HS-PS1-1

The __________ are touching or bordering the zig-zag 'staircase' on the Periodic Table.

• metals

• non-metals

• metalloids

Tags

NGSS.HS-PS1-1

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