Biology key-terms chapter 2

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Across
  1. 5. A class of organic compounds that serve as building blocks of proteins
  2. 7. A class of non-polar organic compounds that are in soluble in water and are used for energy storage and cell membranes in living things.
  3. 10. The ability to work. Especially in biology the drive of the physical and chemical process for life.
  4. 12. A substance that can produce hydroxide ions (OH-) or accept hydrogen ions (H+) in the solution.
  5. 14. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction.
  6. 16. A substance that is present before a chemical reaction and takes part in it, usually shown I=on the left-hand side of the chemical equation
  7. 18. The Physical stuff that makes up the universe. Any thing that occupies space.
  8. 22. A convaletly bonded compound containing the element carbon.
  9. 24. A class or organic compounds that serve as the building blocks of for the information storage molecules DNA and RNA
  10. 25. A substance that which is made out of one kind of atom
  11. 27. the tendency of energy to disperse and become less available to do work
Down
  1. 1. The process in which one substance and the solute is broken up into smaller pieces by and distributed within a second substance, which is known as the solvent.
  2. 2. Does not change the identity in a substance
  3. 3. The building block of matter
  4. 4. Quality of molecules having an uneven distribution of electrical charge resulting in some religions of a molecule having negative charge while others are positive
  5. 6. A change in a substance that results in one or more new substances being formed that have different physical and chemical properties than those of the original source
  6. 8. A substance that binds with enzyme and reduces its activity thus slowing a chemical reaction that the enzyme catalyst
  7. 9. An organic compound comprised of the elements of carbon, hydrogen \, and oxygen which includes sugars starch and cellulose
  8. 11. The substance formed during a chemical reaction, usually indicated on the right-hand side of a chemical equation
  9. 12. An attraction between two atoms as a result of sharing for transferring valence electrons.
  10. 13. The process by which particles in solution are evenly distributed throughout the solvent by Brownian motion.
  11. 15. The attraction of particles in one substance for particles in a different substance
  12. 17. A pure substance made from 2 or more elements that are chemically combined
  13. 18. The smallest particle of a convaletly bonded pound
  14. 19. A measurement of an average speed of the particles in a substance
  15. 20. A substance that can produce hydrogen ions (H') in solution
  16. 21. A naturally occurring catalyst, usually a protein
  17. 23. A class of simple organic compounds important in living things as a source of both energy and structure
  18. 26. The attraction between like particles within polar substances.