5 Written questions
5 Matching questions
- What are functional groups? Names?
- How many valence electrons does carbon have? How many single covalent bonds can it form?
- What is the Universal Solvent?
- Draw functional group structure and give molecular formula for: Sulfhydryl.
- What scale is pH?
- a WATER!
- b Small organic molecules with great effects:
Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
- c 4 and 4
- d A log scale. Each change is 10 times. So when we go up or down, we add a zero to the end.
- e Sulfhydryl (−SH or HS−) (protein cross-linking, stabilizes structure)
Ex: Covalent bonding w/ other sulfhydryls (disulfide bridge)
5 Multiple choice questions
- Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
- Ex: pH = 12, What is the molar concentration of H⁺? OH⁻? H⁺ is 1 x 10⁻¹², OH⁻ is 1 x 10⁻².
- Amino (-NH₂) (acts as a base, amino acids); N single bonded to 2 H's
- Carbon and Hydrogen
5 True/False questions
Do the functional groups have an impact on life? Give an example. → Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl
Describe surface tension and give an example relating to living organisms. → Solvent: Substance doing the dissolving (water)
Solute: Substance being dissolved (sugar or salt)
Solution: homogenous mixture (product of solvent & solute)
How do acids and bases affect pH? → Buffers are molecules that resist change in pH; they either release H⁺ to lower the pH or take up H⁺ to raise the pH
Be able to recreate hydrogen bonding in water. →
(see p. 1 slide 4 in ch. 3)
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? → 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