Crossword Puzzle for Chapter 2

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Across
  1. 3. The attraction between like particles within polar substances
  2. 4. A pure substance made of only one kind of atom
  3. 6. An attraction between two atoms as a result of sharing or transferring valence electrons
  4. 9. A naturally occurring catalyst, usually a protein
  5. 10. A pure substance made from two or more elements that are chemically combined
  6. 13. The physical stuff that makes up the universe, anything that occupies space and has mass
  7. 14. A covalently bonded compound containing the element carbon
  8. 16. The attraction of particles in one substance for particles in a different substance
  9. 17. A class of nonpolar organic compounds that are insoluble in water and are used for energy storage and cell membranes in living things
  10. 22. a change of materials into another, new materials with different properties and one or more than one new substances are formed
  11. 24. The tendency of energy to disperse and become less available to do work
  12. 25. A class of simple organic compounds important in living things as a source of both energy and structure
  13. 26. A substance that is present before a chemical reaction and takes part in it, usually shown on the left-hand side of a chemical equation
  14. 28. A substance that can produce hydroxide ions (OH-) or accept hydrogen ions (H+) in solution
Down
  1. 1. A substance that binds to an enzyme and reduces its activity, thus slowing a chemical reaction that the enzyme catalyzes
  2. 2. The smallest particle of a covalently bonded compound
  3. 5. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA
  4. 7. the process where a solute in gaseous, liquid, or solid phase dissolves in a solvent to form a solutiont
  5. 8. An organic compound comprised of the elements carbon, hydrogen, and oxygen
  6. 11. The substances formed during a chemical reaction, usually indicated on the right side of a chemical equation
  7. 12. the passive movement of molecules or particles from an area of higher concentration to an area of lower concentration
  8. 15. A substance that can produce hydrogen ions (H+) in solution
  9. 16. A class of organic compounds that serve as the building blocks of proteins
  10. 18. A change in a substance that does not change the identity of the substance
  11. 19. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of the molecule having negative charge while others are positive
  12. 20. The ability to do work
  13. 21. A measurement of the average speed of the particles within a substance
  14. 23. The building block of matter; the smallest possible particle of an element
  15. 27. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction