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What change (physical or chemical) is necessary to separate the following??

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what change (physical or chemical) is necessary to seperate the following??!!

a. sugar from a sand/sugar mixture

b. iron from iron oxide (rust)

c. pure water from seawater

d. water from a slurry of sand in water

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  1. a.physical-dilution in water

    b.chemical-reduction

    c.physical-distillation

    d.physical-evaporation


  2. A,C AND D are physical and b is chemical

  3. a) physical

    b) chemical

    c) physical

    d) physical
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