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5 Written questions

5 Matching questions

  1. How does waters specific heat compare to other solvents specific heat? What properties does it have that allows this? What affect does this have on the climate?
  2. What are functional groups? Names?
  3. Why is water in the solid phase less dense? How does this support life?
  4. What are primary producers?
  5. What are the differences between a hydrophilic and hydrophobic substance?
  1. a Hydrophilic - attracted to water; polar or ionic; has charge
    Hydrophobic - repels water; nonpolar; no charge
  2. b Waters specific heat is much higher that that of other solvents; this is because of hydrogen bonding; this keeps temperatures of places near/on bodies of water consistent
  3. c Small organic molecules with great effects:
    Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
  4. d Hydrogen bonds keep the molecules spread out, so they don't pack together, making them less dense.
    The floating ice insulates the body of water underneath it; if ice sank, then all the bodies of water would freeze solid, making life unlivable.
  5. e Fix C from atmospheric CO₂ (ex: Plants w/ photosynthesis)

5 Multiple choice questions

  1. Solvent: Substance doing the dissolving (water)
    Solute: Substance being dissolved (sugar or salt)
    Solution: homogenous mixture (product of solvent & solute)
  2. Hydrogen bonds are the bonds between two polar molecules - one with a partial positive charge and one with a partial negative charge; water is perfect for this because it has the partial negative of Oxygen and the partial positive of Hydrogen.
  3. WATER!
  4. Resistance to change in temperature
  5. Buffers are molecules that resist change in pH; they either release H⁺ to lower the pH or take up H⁺ to raise the pH

5 True/False questions

  1. Know functional group NAMES, MOLECULAR FORMULAS, and STRUCTURES!Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl


  2. Do the functional groups have an impact on life? Give an example.Yes. Ex: tiny tag from a functional group determines whether we are males or females


  3. Does form impact function?YES!


  4. What is heat of vaporization? How does it relate to evaporative cooling? What affect does it have on living organisms?Heat required to convert 1g of liquid into a gaseous state (high); Evaporative cooling is the warmest molecules of a liquid leave as a gas; allows us to sweat, or release heat so we don't die


  5. Draw functional group structure and give molecular formula for: Hydroxyl.
    Hydroxyl (polar, form hydrogen bonds, polar solvents)
    −OH (may be written HO-)
    Ex: Alcohols, such as Ethanol