Unit 2: Energy and Chemical Reactions

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Across
  1. 1. a chemical equation that accounts for all atoms is _____________
  2. 3. the ability to bring about change
  3. 5. this atom tends to have weak bonds with other atoms
  4. 6. building block of all matter
  5. 8. a bond where electrons are transferred and absorbed
  6. 10. this type of energy is stored
  7. 13. this energy is released when chemical bonds are forming
  8. 16. 2nd strongest chemical bond
  9. 19. strongest chemical bond
  10. 20. weakest chemical bond
  11. 21. a chemical reaction that transfers heat to its surroundings
  12. 23. energy changing forms PE to KE
  13. 25. this type of energy is stored in bonds of atoms
  14. 26. the energy of vibrations traveling through particles
  15. 28. energy moving from one object to another KE to KE
  16. 29. a movement of electrons that results in a flash of light
Down
  1. 2. another name (synonym) for transformation
  2. 4. another name for heat energy
  3. 7. a buildup of charges which increases PE
  4. 9. two or more atoms that are chemically combined
  5. 10. this energy increases when similar charges are in close range of each other
  6. 11. a molecule that is a byproduct of a combustion chemical reaction
  7. 12. a bond where electrons are shared
  8. 14. the energy of motion
  9. 15. the energy of stretched or compressed objects
  10. 17. energy cannot be created nor destroyed
  11. 18. the energy of the sun
  12. 22. a chemical reaction that removes heat from its surroundings
  13. 24. a force between two objects that are in contact with each other
  14. 27. within any system most energies are converted to this energy