Physical and Chemical Changes
   
    Physical Change:
    Changes affecting the form of a substance, 
      but NOT its chemical composition
    New properties can appear.
                 Properties of Matter
   Colour                         Conductivity
   Odour                             The ability of a 
   Hardness                           substance to allow the 
                                      flow of energy or 
     Melting/Freezing Point            electricity
   Boiling Point                  Mass
   Luster                         Weight
      How shiny a substance       Volume
       is
                                   Height
   Malleability
                                   Density
      The ability of a 
       substance to be beaten         The mass of a substance 
       into thin sheets                divided by its volume
       Physical and Chemical Changes
   
    Chemical Change:
    Change in chemical composition
    Always causes at least one new substance to 
      be formed with new properties.
           Indicators of Change
                      
    Heat loss or gain   Change in state
  
    New substance 
    formed
  
    New properties 
    formed
  
    New colour appears
  
    Colour disappears
  
    Starting material 
    used up
                      
    Gas bubbles formed  Change in texture
  
    Solid (precipitate) 
    forms
  
    Light given off
  How are Chemical and Physical Changes Alike?
  
   Both are changes
  
   New properties
  
   Take time
  
   Involve matter
  
   New colour (appear or disappear)
  
   Changes in texture