Metals, Non-Metals And Alkali Metals for year 8

  Metals

• Sonorous/ring when hit
• Shiny surface
• Malleable
• Conduct electricity and heat
• solids with a high melting point (except mercury)
• left of periodic table
• three are magnetic:
• can burn to form alkaline oxides
• flexible

 Non-metals

• Are not good conductors
• Dull
• Most are solids or gases
• Right of periodic table
• Are not magnetic
• Can burn to form acidic oxides
• brittle-easily broken/cracked

Alkali metals

•   Lithium, Sodium, Potassium, Rubidium and Caesium
  

• Most react with air and water and are stored in oil to keep out oxygen and moisture.

• Most float and fizz in water. The bubbles contain Hydrogen. Potassium is so reactive that the heat it produces when it reacts sets the gas alight.

• The alkali metals are in Group 1 and the metals' reactivities increase down the group