Periodic table

• Things that increase as you move down Group 1, Group 7 and Group 0

  • atomic radius
  • atomic number
  • density
  • atomic mass
• Alkali metals

  • Solids at room temperature
  • Very reactive
  • Good conductors of heat and electricity
  • Soft
  • Shiny when cut
  • Low density
• Halogens

  • Some solids, a liquid and some gases at room temperature
  • Very reactive
  • Poor conductors of heat and electricity
  • Solids are brittle
  • Low density
• Noble gases

  • Gases at room temperature
  • Unreactive
  • Poor conductors of heat and electricity
  • Low density
• Not all metals are magnetic. So, even if a material is not attracted by a magnet, it could still be a metal.
• Metal elements

  • Any element from the left of the stepped line
• Non-metal elements

  • Any element from the right of the stepped line
• Group 1 melting and boiling points

  decrease moving down the group
• Group 7 melting and boiling points

  increase going down the group
• Group 0 melting and boiling points

  increase going down the group
• Group 1 reactivity

  increase going down the group
• Group 7 reactivity

  decreases going down the group
• Group 0 reactivity

  unreactive
• Group 1 name

  Alkali metals
• Group 7 name

  Halogens
• Group 0 name

  Noble gases
• Where is the stairs on the periodic table?

  From group 3 going down to the bottom

  
• Metal properties

  • Shiny
  • Good conductor of heat
  • Oxides form alkaline solutions
  • Malleable
  • Ductile
• Non-metal properties

  • Poor conductor of electricity
  • Low density
  • Brittle
  • Dull
• density

  the mass of a substance per unit volume
• malleable

   able to be hammered or pressed into shape without breaking or cracking.
• Brittle

  easily broken, cracked
• ductile

  you can bend or shape a substance
• Solubility definition

  the ability of a substance to dissolve in another to form a solution
• Solute definition

  The substance that gets dissolved - salt, sugar etc
• Solvent definition

  The substance that does the dissolving - water etc
• Law of conservation of mass

  No mass was lost or gained in the experience
• Element definition


  substances that contain only 1 type of identical atom
• Mixture definition


  substances that contain atoms of at least two elements that are not chemically combined
• Compound definition


  Substances that contains atoms of at least two elements that are chemically combined