Combustion and Chemical reactions

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Across
  1. 3. dioxide a gas produced during combustion
  2. 5. the energy required to start and sustain combustion
  3. 8. the process of starting a combustion reaction
  4. 9. reaction a process in which substances change into new
  5. 12. a rapid combustion that releases large amounts of energy
  6. 16. a product of combustion, made of two hydrogen atoms and
  7. 20. gives off heat.
  8. 22. a gas needed for combustion to happen
  9. 23. is burned
  10. 24. change a change that causes a new substance to be formed
  11. 25. a chemical reaction
  12. 26. a material used to produce heat or power by burning
  13. 27. a pure form of matter
  14. 28. oxygen atom
  15. 29. a collection of solid, liquid, and gas particles released when a
Down
  1. 1. a chemical reaction in which a substance reacts with oxygen
  2. 2. equation a chemical equation that has an equal amount of each
  3. 4. substance at the beginning of the reaction
  4. 6. equation representation of chemical reaction using symbols and
  5. 7. on the left and right sides
  6. 10. the amount of matter or substance that makes up an object
  7. 11. capable of being easily ignited and burning quickly
  8. 13. of conservation of mass mass can neither be created nor destroyed
  9. 14. and flame
  10. 15. formulas
  11. 17. the ability to do work
  12. 18. two or more atoms that are connected by a chemical bond
  13. 19. substance at the end of the reaction
  14. 21. instance of combustion in which fuel is ignited, giving off light,