Bio unit 2 vocab

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Across
  1. 4. reaction in living organisms that builds molecules (requires energy)
  2. 7. biological catalysts
  3. 9. a combination of 2 or more elements connected by bonds
  4. 10. attraction between molecules of the same substance
  5. 12. mass equal to the total number of protons and neutrons in the nucleus of an atom (based on average mass from isotopes)
  6. 18. reaction- process that changes, or transforms, one set of chemicals into another set of chemicals
  7. 19. elements or compounds that enter into a chemical reaction
  8. 21. positively charged particle found in the nucleus of an atom
  9. 23. capacity (specific heat) the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C)
  10. 25. bond chemical bond formed when one or more electrons are transferred from one atom to another
  11. 27. substance formed as a result of a chemical reaction
  12. 30. reactant of an enzyme-catalyzed reaction
Down
  1. 1. action tendency of water to rise in a thin tube
  2. 2. reaction a reaction that absorbs energy (absorbs heat)
  3. 3. symbol one or twoletter abbreviation for a chemical element name
  4. 5. number the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table (also equals the number of electrons in an element)
  5. 6. bonding weak attraction between a hydrogen atom and another atom
  6. 8. negatively charged particle that orbits the nucleus in the electron cloud
  7. 11. reactiona reaction that releases energy (gives off heat)
  8. 13. pure substance that consists entirely of one type of atom
  9. 14. in a molecule, uneven distribution of electrons (results in (+) and (-) poles) ex. water
  10. 15. bond type of bond between atoms in which the electrons are shared
  11. 16. (chemistry definition) the center of an atom, which contains the protons and neutrons
  12. 17. energy energy that is needed to get a reaction started
  13. 20. electron electron found in the outermost shell of an atom; helps to determine bonding
  14. 22. particle found in the nucleus that has no charge
  15. 24. force of attraction between different kinds of molecules
  16. 26. reaction in living organisms that breaks down complex molecules (releases energy)
  17. 28. substance that speeds up the rate of a chemical reaction
  18. 29. the basic unit of matter