Science Biology Vocabulary #2

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Across
  1. 4. A class of organic compounds that serve as the building blocks of protiens
  2. 5. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of a molecule having a negative charge while others are positive
  3. 9. A change in a substance that results in one or more new substances being formed that have different physical and chemical properties than the original substance
  4. 11. The physical stuff that makes up the uni:verse
  5. 12. A naturally occurring catalyst, usually a protien
  6. 15. A measurement of the average speed of the particles within a substance
  7. 17. The smallest particle of a covalently bonded compound
  8. 18. The attraction of particles in one substance for particles in a different substance
  9. 19. A pure substance made from two or more elements that are chemically combined
  10. 22. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction
  11. 24. The attraction between like particles within polar substances
  12. 25. The process by which particles in solution are evenly distributed
  13. 26. A substance that can produce hydronium ions in a solution
  14. 28. A substance that binds to an enzyme and reduces its activity thus slowing a chemical reaction that the enzyme catalyzes
  15. 29. The process by which one substance, the solute, is broken up into smaller pieces
Down
  1. 1. A change in a substance that does not change the identity of a substance
  2. 2. An organic compound comprised of the elements carbon, hydrogen, oxygen, includes sugars, starch, and cellouse
  3. 3. The tendency of energy to disperse and become less available to do work
  4. 6. A class of organic compounds that serve as building blocks for DNA and RNA
  5. 7. A pure substance made of only one kind of atom
  6. 8. A substance that can provide hydroxide ions and can accept hydronium ions
  7. 10. The ability to do work
  8. 13. The Building block of matter the smallest possible particle of an element
  9. 14. A covently bonded compound containing the element of carbon
  10. 16. A substance that is present before a chemical reaction and takes part in it
  11. 20. The substances formed during a chemical reaction usually indicated on the right hand side of the equation
  12. 21. An attraction between two atoms as a result of sharing or transferring valence electrons
  13. 23. A class of simple organic compounds important in living things as a source of both energy and structure
  14. 27. A class of nonpolar organic compounds that are in solulabe water and are used for energy storage and cells