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what are compounds (what are mixtures (classifying mixtures (solutions and…

- - - - different solids have different degrees of solubility in solvent, that is, some solids are more soluble than others
      - eg, with same volume of water, greater amount of sugar dissolves (compared to salt)
        
        say that solubility of sugar is greater than solubility of salt
        
        pg 79
    - - some substances may be more soluble in one solvent than in another
      - eg, solid iodine is almost insoluble in water but is very soluble in hexane
      - pg 80
    - - solubility of solid changes as temperature changes
      - as temperature of water increases, most solids (but not all) become more soluble in it
      - eg, twice as much sugar dissolves in cup of hot water than in equal volume of ice cold water
- - - - the sugar dissolved in water
      - sugar is soluble in water
      - mixture of sugar and water is solution
      - pg 75
  - - - when suspension is filtered, solid particles are too large to pass through filter paper
        
        hence, they left behind residue on filter paper
        
        however, when solution is filtered, no solid particles are left on filter paper
        
        pg 78
        
        when suspension is left to stand for some time, solid particles settle to bottom
        
        pg 78