Chapter 3 UTA

Card Set Information

Chapter 3 UTA
2013-04-08 20:55:43
Chapter biology UTA

Show Answers:

  1. hydrogen bonds that hold water together
  2. the clinging of one substance to another
  3. a measure of how difficult it is to stretch or break the surface of a liquid
    Surface tension
  4. the energy of motion
    kinetic energy
  5. the measure of the total amount of kinetic energy due to molecular motion in a body of matter
  6. the measure of intensity of heat due to the average kinetic energy of molecules
  7. the amount of heat it takes to raise the temperature of 1g of water by 1C.
  8. Measure of the ability of a substance to resist changes in temperature.
    The amount of heat that must be absorbed or lost for 1g of waterto change its temp by 1C.
    specific heat
  9. the quantity of heat a liquid must absorb for 1g of it to be converted
    from liquid to gas. Hydrogen bonds must be broken so some of the energy
    is expended on the breaking ofbonds.
    heat of vaporization
  10. a completely homogeneous mixture of 2 or more substances
  11. the dissolving agent of a solution
  12. the substance dissolved in a solution
  13. a solution where water is the solvent
    aqueous solution
  14. what is a strong electronegative element?
  15. what is the type of covalent bond between oxygen and hydrogen
  16. Is the strong cohesive forces between liquid molecules.
    Surface tension. H2O has a high surface tension
  17. What must happen for water temp to rise
    Hydrogen bonds must be broken by result of an input of energy. More energy must be used in order to heat up water than other liquids because some of the energy must be used to break the bonds.
  18. what happens when more hydrogen bonds are formed thus releasing energy
    water is cooling. The released energy tends to resist drops in temp
  19. maximum water density occurs at what temp?
    4C, caused by hydrogen bonds seperating water molecules in a structured way when water is ice. This is why ice floats.
  20. Molecules that interact or dissolve in water and from hydrogen bonds.
  21. molecules such as fat that do not dissolve in water due to the molecules not being able to form hydrogen bonds.
  22. when is water considered in equilibrium?
    H2O1H^3 and OH^-.
  23. scale that indicates the concentration of H^+ in water or 7 on the scale
    • PH scaleĀ 
    • 7+=acidic.
    • 7=akaline
  24. the rate that many chemical reactions occur
    Definition of PH
  25. weak acids and bases that resist changes in PH
    • Buffers
    • Carbonic acid->Bicarbonate ion + hydrogen ion