CH 1 REVIEW CROSSWORD

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Across
  1. 1. electron - Electron(s) located in the outermost shell of an atom that is responsible for the formation of chemical bonds
  2. 4. energy is released/ gives off heat
  3. 7. - A subatomic particle of about the same number as a proton, but neutral to an electric charge.
  4. 12. or more atoms connected by chemical bonds,
  5. 14. Two or more mixed up objects that can be unmixed
  6. 17. is the ability to do work and transfer heat
  7. 19. of matter- the form in which matter can be found, which occurs in nature as solid, liquid, gas, or plasma
  8. 22. a substance that undergoes a change in a chemical reaction
  9. 23. how much a substance can dissolve into another
  10. 24. something that helps a chemical reaction occur
  11. 25. mass - weight of the atom. Number of neutrons number of protons (electrons are VERY light in mass)
  12. 26. a chemical reaction such as oxidation that produces heat and usually light
  13. 27. the liquid substance in which a solute dissolves to form a solution
  14. 28. change- a transition from a state of matter to a different state of matter
Down
  1. 2. - A negatively charged subatomic particle found in the electron cloud
  2. 3. reaction-chemical change in which two or more substances form a new substance with different properties
  3. 5. A subatomic particle found in the nucleus of every atom. It has a positive electrical charge
  4. 6. the substance in a solution that dissolves in the solvent
  5. 8. energy is absorbed/ takes in heat
  6. 9. is a substance made up of two or more different chemical elements combined in a fixed ratio.
  7. 10. number- number of protons in an atom
  8. 11. basic particle
  9. 13. cloud (orbital) - A region around an atomic nucleus, defined by a high probability that the atom's electrons will be in that region; Where the electrons are located.
  10. 15. occurs when two different liquid solutions are mixed as reactants.
  11. 16. to make thinner
  12. 18. energy- energy released by a chemical reaction or absorbed during the formation of a chemical compound
  13. 20. to become or cause to become incorporated into a liquid
  14. 21. a substance produced by a chemical reaction, different from the reactants