CHEMISTRY 1010 USU FINAL EXAM
QUESTIONS & VERIFIED ANSWERS
PASSED 100% LATEST VERSION
Which of the following metals would be easiest to reduce to a pure metal from an ore? -
Correct Answer ✔✔ rhodium (Rh)
During an electrochemical reaction in a voltaic cell, oxidation occurs at the ___i___, and
reduction occurs at the ___ii___. - Correct Answer ✔✔ i= anode, i= cathode
The following set of redox reactions takes place as shown as part of a voltaic cell:
Container A: Fe --> Fe2+ + 2e- Container B: Cu2+ + 2e- --> Cu Consider a situation
where the pieces of metal in each container a connected via a wire, but there is no salt
bridge connecting the containers. What happens? - Correct Answer ✔✔ A little bit of
iron is converted into iron ions and a little bit of the copper ions are converted into
copper metal.
In a voltaic cell, the following oxidation-reduction reaction takes place:
I2O5 + 5 CO --> I2 +5CO2
What is being formed at the cathode? - Correct Answer ✔✔ I2
Why can rechargeable batteries be recharged? - Correct Answer ✔✔ Their chemical
reactions are reversible if energy is used.
How would connecting iron with a wire to a piece of metal like copper, which undergoes
reduction very easily, affect the rate at which the iron corrodes? - Correct Answer ✔✔ It
would increase the rate of corrosion because it would accelerate the rate oxidation.
Iron is useful for reducing copper ions to copper metal because it is more easily
oxidized than copper. Might it also be used to reduce sodium ions to sodium metal? -
Correct Answer ✔✔ No, because sodium is more easily oxidized than iron.
Which of the following elements would be most useful for doping in making an n-type
silicon semiconductor? - Correct Answer ✔✔ antimony (Sb)
How is electrolysis different from how a battery operates? - Correct Answer ✔✔
Electrolysis uses energy to create chemical change, while a battery creates energy from
chemical changes.
Which of the following indicates an oxidation? - Correct Answer ✔✔ The losing of
hydrogen atoms
, What is the oxidizing agent in the below chemical reaction? 2 CuBr --> 2 Cu + Br2 -
Correct Answer ✔✔ Cu+
Are alcohols or phenols more acidic and why? - Correct Answer ✔✔ Phenols are more
acidic because they can delocalize the negative charge after reacting through
resonance.
What type of reaction forms an alkaloid salt? - Correct Answer ✔✔ The reaction
between an amine and an acid
How does retrosynthetic analysis propose a way to synthesize an organic compound? -
Correct Answer ✔✔ The analysis begins with the product and successively breaks
bonds that can be formed through known chemical reactions in order to break the
desired product into smaller pieces
Why do heteroatom help determine the physical and chemical properties of a molecule?
- Correct Answer ✔✔ They possess nonbonding pairs of electrons and affect the
molecule's polarity
Despite both being made of glucose, glycogen, and cellulose have vastly different
physical and chemical properties. What is the source of these differences? - Correct
Answer ✔✔ The way the glucose monomers are connected
Why doe most steroids have chemical structures very similar to cholesterol? - Correct
Answer ✔✔ Most steroids are created using cholesterol as the starting material
What nitrogenous base pairs with adenine in RNA? - Correct Answer ✔✔ Uracil
An alpha helix is an example fo what type of protein structure? - Correct Answer ✔✔
Secondary structure
Which of the following terms describes specifically the breaking down of large
biomolecules into smaller biomolecules? - Correct Answer ✔✔ Catabolism
Chromosomes store hereditary genetic information in form of what molecules? - Correct
Answer ✔✔ DNA
What determines the secondary, tertiary, and quaternary structure of a protein? -
Correct Answer ✔✔ Intermolecular forces
Why are children more vulnerable to a lack of lipid soluble vitamins than adults? -
Correct Answer ✔✔ Children have not had time to build lipid-soluble vitamin reserves in
their fat stores
Which of the following foods would provide the quickest burst of energy? - Correct
Answer ✔✔ Whole wheat bread (glycemic index = 68)
QUESTIONS & VERIFIED ANSWERS
PASSED 100% LATEST VERSION
Which of the following metals would be easiest to reduce to a pure metal from an ore? -
Correct Answer ✔✔ rhodium (Rh)
During an electrochemical reaction in a voltaic cell, oxidation occurs at the ___i___, and
reduction occurs at the ___ii___. - Correct Answer ✔✔ i= anode, i= cathode
The following set of redox reactions takes place as shown as part of a voltaic cell:
Container A: Fe --> Fe2+ + 2e- Container B: Cu2+ + 2e- --> Cu Consider a situation
where the pieces of metal in each container a connected via a wire, but there is no salt
bridge connecting the containers. What happens? - Correct Answer ✔✔ A little bit of
iron is converted into iron ions and a little bit of the copper ions are converted into
copper metal.
In a voltaic cell, the following oxidation-reduction reaction takes place:
I2O5 + 5 CO --> I2 +5CO2
What is being formed at the cathode? - Correct Answer ✔✔ I2
Why can rechargeable batteries be recharged? - Correct Answer ✔✔ Their chemical
reactions are reversible if energy is used.
How would connecting iron with a wire to a piece of metal like copper, which undergoes
reduction very easily, affect the rate at which the iron corrodes? - Correct Answer ✔✔ It
would increase the rate of corrosion because it would accelerate the rate oxidation.
Iron is useful for reducing copper ions to copper metal because it is more easily
oxidized than copper. Might it also be used to reduce sodium ions to sodium metal? -
Correct Answer ✔✔ No, because sodium is more easily oxidized than iron.
Which of the following elements would be most useful for doping in making an n-type
silicon semiconductor? - Correct Answer ✔✔ antimony (Sb)
How is electrolysis different from how a battery operates? - Correct Answer ✔✔
Electrolysis uses energy to create chemical change, while a battery creates energy from
chemical changes.
Which of the following indicates an oxidation? - Correct Answer ✔✔ The losing of
hydrogen atoms
, What is the oxidizing agent in the below chemical reaction? 2 CuBr --> 2 Cu + Br2 -
Correct Answer ✔✔ Cu+
Are alcohols or phenols more acidic and why? - Correct Answer ✔✔ Phenols are more
acidic because they can delocalize the negative charge after reacting through
resonance.
What type of reaction forms an alkaloid salt? - Correct Answer ✔✔ The reaction
between an amine and an acid
How does retrosynthetic analysis propose a way to synthesize an organic compound? -
Correct Answer ✔✔ The analysis begins with the product and successively breaks
bonds that can be formed through known chemical reactions in order to break the
desired product into smaller pieces
Why do heteroatom help determine the physical and chemical properties of a molecule?
- Correct Answer ✔✔ They possess nonbonding pairs of electrons and affect the
molecule's polarity
Despite both being made of glucose, glycogen, and cellulose have vastly different
physical and chemical properties. What is the source of these differences? - Correct
Answer ✔✔ The way the glucose monomers are connected
Why doe most steroids have chemical structures very similar to cholesterol? - Correct
Answer ✔✔ Most steroids are created using cholesterol as the starting material
What nitrogenous base pairs with adenine in RNA? - Correct Answer ✔✔ Uracil
An alpha helix is an example fo what type of protein structure? - Correct Answer ✔✔
Secondary structure
Which of the following terms describes specifically the breaking down of large
biomolecules into smaller biomolecules? - Correct Answer ✔✔ Catabolism
Chromosomes store hereditary genetic information in form of what molecules? - Correct
Answer ✔✔ DNA
What determines the secondary, tertiary, and quaternary structure of a protein? -
Correct Answer ✔✔ Intermolecular forces
Why are children more vulnerable to a lack of lipid soluble vitamins than adults? -
Correct Answer ✔✔ Children have not had time to build lipid-soluble vitamin reserves in
their fat stores
Which of the following foods would provide the quickest burst of energy? - Correct
Answer ✔✔ Whole wheat bread (glycemic index = 68)
