Understanding the Periodic Table of Elements

Left of the “Staircase” are metals:

Properties of metals are:

Left of the staircase

Luster - Shiny

Malleable- Can be hammered into a thin sheet

Ductile- Can be stretched into wire

Good conductors of electricity and heat

Higher density

High melting point

Right side of the staircase are non-metals

Properties of non-metals are:

Right of the staircase

No luster - Dull

Brittle

Bad conductors of heat and electricity

Low density

Low melting point

Metalloids are along the staircase

Properties of both metals and non metals

Can be shiny or dull

Solid

Draw a metal and a nonmetal Label it with one of the characteristics

Pg 93

How to read the periodic table

Dmitri Mendeleev- Russian chemist who designed the periodic table of elements

Periods- Horizontal rows Elements in a period have similar mass, but different properties

Groups or Families- vertical columns Elements in the same family have similar characteristics and the same number of valence electrons

Some families have their own names

Alkali Metals First family Very reactive because of only 1 valence electron

Hydrogen Lithium

Alkaline Metals Second family 2 valence electrons

Beryllium Magnesium

Halogens Second to last family Very reactive

Noble gasses Don’t react with any other elements Full outer shell

Helium Neon