Review: Periodic table

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 ______ 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

If an element is in group number 18 you know it is stable and has a full octet. What is its name?

• Alkali metals

• Halogens

• Noble gases

• Transition metals

Tags

NGSS.HS-PS1-1

If an element is in group number 14 you know it has 4

• valence electrons.

• protons.

• energy levels.

• atomic mass units.

Tags

NGSS.HS-PS1-1

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

• Alkali metals

• Alkaline Earth metals

• Halogens

• Noble gases

The most reactive group of non-metals is group ____.

• Alkali metals

• Alkaline Earth metals

• Halogens

• Noble gases