Chem Semester 1 terms

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Across
  1. 1. positive ion
  2. 6. rule that states each atom wants 8 electrons
  3. 7. unstable isotopes are this
  4. 9. found by multiplying percent composition and mass and adding together
  5. 14. a helium nucleus
  6. 19. element that always comes in pairs
  7. 23. an element or compound is in this category
  8. 25. compound that includes one metal and one nonmetal
  9. 26. row on the periodic table
  10. 27. particle absorbed by electron. When released, we see color in the flame test
  11. 29. size of an atom; increase as you go down a column and decreases as you go across a row
  12. 30. reaction that happens between two compounds in whichw elements switch places
  13. 32. elements on the stair steps of periodic table
  14. 34. a mixture that has a dissimilar distribution
  15. 37. column on the periodic table
  16. 38. column 17 (7A) on the periodic table
  17. 39. nuclear reaction that creates a lighter element
  18. 41. electron configuration of 1s2 2s2 2p6 3s1
  19. 43. must be done to separate a compound into its elements
  20. 44. elements in the D block of periodic table
Down
  1. 2. elements that react in water; column 1
  2. 3. outermost electrons
  3. 4. particle the same size as an electron
  4. 5. compound that starts with an H
  5. 8. 2 or more elements chemically bonded together
  6. 10. order as to how sublevels fill
  7. 11. most penetrating form of radiation
  8. 12. separating a mixture is a
  9. 13. number of protons an element has
  10. 15. number of electrons that can fit in one orbital
  11. 16. reaction that occurs with a metal and a compound
  12. 17. an elements ability to attract and hold another element in a chemical bond
  13. 18. a type of homogenous mixture that is typically created when one mixes a compound in water
  14. 20. charged atom
  15. 21. a mixture that has a uniform distribution
  16. 22. empty bus seat rule
  17. 24. occurs between a hydrocarbon and oxygen gas
  18. 25. variation of an element; same protons different neutrons
  19. 28. elements that do not react with other elements
  20. 31. the mass to volume ratio of a substance
  21. 33. two nonmetals form this type of bond
  22. 35. subatomic particle not in the nucleus of that atom
  23. 36. negative ion
  24. 40. atoms bonded together that act as one ion
  25. 42. found by adding protons and neutrons of an isotope