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Graduate Chemistry Questions

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Graduate Molecules and Compounds
Which symbol represents water?
  1. [math]H_2 O[/math]
  2. [math]H_3 O[/math]
  3. [math]C_2 O[/math]
Graduate Acids and Bases
Graduate Acids and Bases
The difference in pH units between two acidic solutions is three. How much more acidic is the stronger acid than the weaker acid?
  1. 3 times more acidic
  2. 30 times more acidic
  3. 100 times more acidic
  4. 1000 times more acidic
Graduate Acids and Bases
Select the most complete explanation of what the pH scale actually measures
  1. The acidity of a solvent
  2. The alkalinity of a solvent
  3. The concentration of hydrogen ions in a solution
  4. The concentration of hydroxide ions in a solute
Graduate Bonds and Mixing
An ionic bond is...
  1. opposite charges attract
  2. when compounds come together
  3. a bond with two elements
  4. when atoms share electrons
Graduate Macromolecules
Lipids are all                .
  1. hydrophonic
  2. hydrophilic
  3. hydrophobic
  4. hydrolytic
Graduate Macromolecules
What is the chemical equation for glucose?
  1. C2H4O2
  2. C4H8O4
  3. C6H12O6
  4. C8H16O8
Graduate Macromolecules
What is another name for the polymers of carbohydrates?
  1. Triglycerides
  2. Polysaccharides
  3. Polypeptides
  4. Nucleotides
Graduate Macromolecules
Graduate Bonds and Mixing
A needle can be made to "float" on the surface tension of water. What causes this surface tension to form?
  1. The adhesion of water molecules to the needle
  2. The cohesion of water molecules to each other
  3. The solubility of water
  4. The heat capacity of water
Graduate Macromolecules
A fat is said to be saturated if                                                          .
  1. There are many double bonds present in the molecule.
  2. There are only single bonds between each pair of carbons.
  3. The fat molecule cannot contain any more covalent bonds.
  4. There are as many double bonds present as possible.
Graduate Macromolecules
What are the monomers of proteins?
  1. Hydrochloric acids
  2. Nucleic acids
  3. Carboxylic acids
  4. Amino acids
Graduate Biochemical Pathways
Which of the following best describes the chemical equation for photosynthesis?
  1. Carbon dioxide + Sugar + Energy = Oxygen + Water
  2. Oxygen + Water + Carbon dioxide = Sugar + Energy
  3. Water + Carbon dioxide + Energy = Sugar + Oxygen
  4. Oxygen + Sugar = Water + Carbon dioxide + Energy
Graduate Biochemistry
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