Combustion and Chemical Reactions

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Across
  1. 3. change the change of one or more substances into another substance(s)
  2. 4. a gas needed for combustion to happen
  3. 5. a process in which a substance reacts with oxygen and gives off heat
  4. 8. substances at the beginning of reaction
  5. 9. the energy required to start and sustain combustion
  6. 11. the process of starting a combustion reaction
  7. 12. two or more atoms that are connected by a chemical bond
  8. 14. a collection of solid, liquid, and gas particles released when a material is burned.
  9. 15. equation the number of atoms of each element is the same on both the reactant and product sides
  10. 19. a product of combustion, made of two hydrogen atoms and one oxygen atom
Down
  1. 1. instance of combustion in which fuel is ignited, giving off light, heat, and flame
  2. 2. substances at the end of reaction
  3. 3. reaction a process in which substances change into new substances
  4. 6. a pure form of matter
  5. 7. the ability to do work
  6. 10. a rapid combustion that releases large amounts of energy
  7. 12. the amount of matter or substance that makes up an object
  8. 13. dioxide a gas produced during combustion
  9. 16. of conservation of mass mass is never created or destroyed during a chemical reaction.
  10. 17. equation a representation that shows how chemical reactions produce products
  11. 18. a material used to produce heat or power by burning