MATTER,MATERIALS AND MIXTURES

MATTER,MATERIALS AND MIXTURES

1. a trip to a recycling

   • plastic bottel
   • glass bottle
   • recicling plant
   • kitchen esponge
   • wooden pallet

2. matter changes

   • change of state
     • we can cange state
       • liquid to a solid
         • freezing
       • liquid to gas
         • evaporation
   • change of shape
     • we can bend
       • twist
       • press and stretch

3. chemical changes

   • combustion
     • when we burn paper
       • combustion is the paper ash
   • oxidation
     • the oxidation is change
       • the rugh and brown

4. mixtures

   • two or more different materials

5. separating materials in a mixtures

   • sieving
     • good for separating solids of different sizes
   • filtering
     • good for separating solids and liquids
   • evaporation
     • good for separating a solid that is disolved in a liquid