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Sort pure substances from mixtures

Exercise and reference answers

Items
  1. Item
    Iron (Fe)
    Answer
    left
  2. Item
    Water (H₂O)
    Answer
    left
  3. Item
    Salt (NaCl)
    Answer
    left
  4. Item
    Air
    Answer
    right
  5. Item
    Brass
    Answer
    right
  6. Item
    Sea water
    Answer
    right
Categories
Left
Element / Compound
Right
Mixture
Instructions
Swipe each sample left for Element / Compound or right for Mixture.
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