Chemical Reactions And Equations

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Across
  1. 3. solid formed in reaction in solution
  2. 6. a new substance produced chemical reaction
  3. 8. gas filled in chips packet
  4. 9. chemical substance increases reaction's rate
  5. 10. Heat evolved in this reaction
Down
  1. 1. it turns milky when reacts with CO2
  2. 2. reaction Zn + HCL----> ZnCl2 + H2
  3. 4. this gas produces a pop sound when burns
  4. 5. this change always produces a new substance
  5. 7. the process of burning a substance in air