UNIT 1 BIOLOGY

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Across
  1. 2. the total weight of an atom
  2. 4. hydrogen and another atom bonded together
  3. 7. bond where electrons are shared
  4. 8. forces that hold atoms together
  5. 10. bond between oppositely charged ions
  6. 11. likes water
  7. 15. does not mix with water
  8. 16. a bond where electrons are shared between atoms
  9. 17. variable that is dependent on something else
  10. 18. the outermost shell or orbital of an atom
  11. 21. atom with the same number of protons but different numbers of neutrons
  12. 23. speeds up reactions
  13. 24. the total number of protons and neutrons in an atom
Down
  1. 1. How water travels from the root of a tree upward
  2. 3. bond between a hydrogen bond and other atoms
  3. 5. the property of being polar
  4. 6. a bond formed from the attraction of oppositely charged ions
  5. 9. determines the chemical properties of an element
  6. 12. variable that is not dependent on something else
  7. 13. make up monomers
  8. 14. made of polymers
  9. 19. different forms of the same element in the molecular level
  10. 20. made up of two or more elements
  11. 22. contains two kinds of subatomic particles