Key Elements: Boron, Silicon, Germanium, Arsenic
Physical Properties: Shiny, Brittle, Good Electrical Conductivity
Chemical Properties:
Non Metals
Key Elements: Hydrogen, Helium, Nitrogen, Oxygen
Physical Properties: Dull, Weak, Brittle
Chemical Properties: Poor heat conductor, Do not react
with air at room temperature, Poor conductor of electricity
Metals
Key Elements: Gold, Aluminum, Copper, Iron
Physical Properties: Lustrous, Malleable, High density
Chemical Properties: Great conductor of heat as well
as electricity, does not react with room temperature water
Noble Gasses
Key Elements: Neon, Krypton, Xenon, Argon
Physical Properties: Conduct electricity, colourless, odourless
Chemical Properties: Low chemical reactivity, Extremely stable, do not react with water
Halogens
Key Elements: Chlorine, Florine, Bromine, Iodine
Physical Properties: Low melting point, Low boiling point,
range of states
Chemical Properties: Cannot conduct electricity, nor heat,
react slightly with water
Transition Metals
Key Elements:Iron, Copper, Zinc, Titanium
Physical Properties: Malleable, High density, High melting point
Chemical Properties: Oxidize in air, rarely react with water,
React slowly with acids
Alkaline Earth Metals
Key Elements: Beryllium, Magnesium, Calcium
Physical Properties: Lustrous, Low density, Low melting point
Chemical Properties: Very reactive in water, air and acid
Alkali Metals
Key Elements: Lithium, Sodium, Potassium
Physical Properties: Lustrous, Soft, Low melting point
Chemical Properties: Highly reactive with air, as well as water and acid
