Chemistry Crossword

12345678910111213
Across
  1. 5. reaction in the form a+bc=ac+b where a and b are metals
  2. 7. the concentration of _________ increases during the reaction
  3. 10. increase the activation energy (plural)
  4. 12. reaction used to weld rails
Down
  1. 1. when energy is smaller than ______________ reaction doesn't happen
  2. 2. in 80% of the periodic table are placed __________
  3. 3. the rate of the reaction depends on them (2)
  4. 4. the least reactive metal
  5. 6. metals+water=_________(plural)
  6. 8. H2SO4 is a ______________
  7. 9. substance that affect the rate of the reaction without being used up
  8. 11. released and water reacts with metals
  9. 13. - a biological catalyst