Energetics (IGCSE)

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Across
  1. 1. reaction that absorbs heat energy (p.91)
  2. 3. movement of energy from one place to another (p.91)
  3. 4. rapid reaction with oxygen releasing energy (p.90)
  4. 7. minimum energy needed to start a reaction (p.91)
  5. 8. process where substances change into new substances (p.91)
  6. 10. measure of how hot or cold something is (p.91)
  7. 13. visual representation of energy change (p.91)
  8. 15. principle stating energy cannot be created or destroyed (p.91)
  9. 16. ability to do work or cause change (p.91)
  10. 17. total energy stored within a system (p.91)
  11. 19. starting substances in a chemical reaction (p.91)
  12. 20. part of the universe being studied (p.91)
  13. 23. substances formed during a reaction (p.91)
  14. 24. reaction that releases heat energy (p.91)
Down
  1. 2. release of energy from food in living cells (p.91)
  2. 5. reaction that occurs without continuous energy input (p.91)
  3. 6. energy obstacle that must be overcome for reaction to occur (p.91)
  4. 9. everything outside the system (p.91)
  5. 11. study of energy changes in chemical reactions (p.91)
  6. 12. process where plants use light energy to make food (p.91)
  7. 13. breakdown of a compound using heat (p.91)
  8. 14. instrument used to measure temperature change (p.91)
  9. 18. relating to heat energy (p.91)
  10. 21. graph showing energy changes during a reaction (p.91)
  11. 22. substance burned to release energy (p.90)