Water

Water

1. Three changes of state are Solid, Liquid and Gas

   • The higher the temporature, the more energy the the thing has
     • Gas spreads around and does not touch
     • Lquids are looser and move around
     • Solids are close together and vibrate

2. A common test for finding the presence of water

   • Using Cobalt Chloride, soak filter paper in it then dry out paper. Put over object being tested
     • Cobalt Chloride: COBALT is blue. WATER in the sea is blue

3. Observations of appearances are opaque, translucent and transparent

4. Solute, solvent and solution

   • A solution is typically a mixture of a liquid and a dissolved solid
   • A solvent is the thing that a solute is being dissolved in
     • A common solution is water and salt
   • A solute is usually the solid being dissolved
     • Being soluable means that the solute can dissolve
       • SOLUable + SOLUte= SOLU

5. Obtaing Clean water

   • Layer of SEDIMENT at the bottom of the container
     • DECANTING by carefulling pouring just the water into other container
       • Pour dirty water through filter paper into a conicle flask
         • RESIDUE is left in filter paper and FILTRATE (clean water) is now in flask
           • FILTRATE because that is what has been FILTERED through

6. Water Distillation

   • Heat water so it evaporates and hits solid object and cools down
     • Water goes from liquid to gas to liquid to leave salt residue behind
   • water distillation is when you receive clean water from salty