CH 1 REVIEW CROSSWORD

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