Routt A&P Chem 1

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Across
  1. 3. atoms combine with other atoms or atoms dissociate from other atoms
  2. 4. the process of radioisotope decay
  3. 6. a weak chemical bond formed by the attraction of polar molecules
  4. 8. chart listing all elements and information about each one
  5. 11. a heavier unstable element that breaks down (decays) to a lighter more stable element
  6. 15. a molecule composed of two or more different elements
  7. 16. a neutral molecule that is slightly positive on one end and slightly negative on the other end
  8. 17. chemicals at the beginning of the chemical reaction
  9. 18. anything that has mass and occupies space.
  10. 20. chemical reaction which breaks atoms/molecules apart to form smaller ones AB > A + B
  11. 22. a subatomic particle with no charge found in the atomic nucleus
  12. 23. Small particles formed when atoms form chemical bonds.
  13. 24. an average atomic mass based on numbers of an element’s isotopes found in nature
  14. 25. a negatively charged subatomic particle found moving around the atomic nucleus at some distance
  15. 26. the number of protons an atom has.
  16. 27. chemicals formed at the end of a chemical reaction
  17. 28. A very small particle made of protons, neutrons, and electrons.
  18. 29. sentence used to show the reactants and products of a chemical reaction
  19. 30. the core of an atom made of protons and neutrons
Down
  1. 1. these hold atoms together to form molecules. there are 3 kinds
  2. 2. In nature there are 92 kinds of atoms. Each kind is called an _____.
  3. 5. a strong chemical bond formed by the attraction of oppositely charged ions.
  4. 7. Symbols used to show the atomic make up of a molecule
  5. 9. an atom with an unusual number of neutrons
  6. 10. both a synthesis and decomposition reaction AB + C > AC + B and AB + CD > AC + BD
  7. 12. the total number of protons plus neutrons in an atom
  8. 13. a positively charged subatomic particle found in the atomic nucleus
  9. 14. chemical reaction which links atoms/molecules together to form bigger ones A + B > AB
  10. 19. One or 2 letters that represent an element.
  11. 21. a strong chemical bond formed when atoms share pairs of electrons