JeopardyAcid/Base Thermo. Kinetics Equilibrium

Nuclear and Biochem.

Q $100

Q $200

Q $300

Q $400

Q $500

Q $100 Q $100Q $100 Q $100

Q $200 Q $200 Q $200 Q $200

Q $300 Q $300 Q $300 Q $300

Q $400 Q $400 Q $400 Q $400

Q $500 Q $500 Q $500 Q $500

Final Jeopardy

$100 Question from Acid/Base

Which substance acts as the base in the reaction: NH3 (aq) + HNO3 (aq) <==>NH4

+ (aq) + NO3- (aq)?

A NH3

B HNO3

C NH4

D NO3

$100 Answer from Acid/Base

A. NH3

$200 Question from Acid/Base

The label on a bottle indicates that the substance inside has a pH of 2. This tells you that the substance is:A.neutral. B.strongly acidic. C.mildly basic. D.strongly basic.

$200 Answer from Acid/Base

B. strongly acidic.

$300 Question from Acid/BaseThe equation below shows how an unknown compound dissociates when dissolved in water.

CH H+ + C-

If this compound is 99.9% dissociated in solution, how would it be classified?A.As a strong base B.As a strong acid C.As a weak base D.As a weak acid

$300 Answer from Acid/Base

B. As a strong acid

$400 Question from Acid/Base

Mr. Lance plans to demonstrate a reaction between a weak acid and a strong base in his class. Which acid and base could he use to demonstrate this reaction?

A.CH3COOH and NaOHB.H2SO4 and NaOHC.CH3COOH and NH4OHD.H2SO4 and NH4OH

$400 Answer from Acid/Base

A. CH3COOH and NaOH

$500 Question from Acid/BaseThe percentages of dissociation of four acids are listed below. Acid P is 0.60% dissociated. Acid Q is 4.15% dissociated. Acid R is 12.55% dissociated. Acid S is 71.55% dissociated.Which comparison of the strengths of the acids is correct?A.Q is a stronger acid than R. B.R is a stronger acid than S. C.R is a weaker acid than Q. D.P is a weaker acid than Q.

$500 Answer from Acid/Base

D. P is a weaker acid than Q.

$100 Question from Thermo.Which statement correctly describes the change in molecular motion as water undergoes a change of phase?A. Molecular motion decrease as liquid water becomes ice.B. Molecular motion stays the same as liquid water becomes water vapor.C. Molecular motion decreases as liquid water becomes water vapor.D. Molecular motion decreases as ice becomes liquid water.

$100 Answer from Thermo.

A. Molecular motion decrease as liquid water becomes ice.

$200 Question from Thermo.

Which graph represents a chemical reaction that releases energy?

$200 Answer from Thermo.

D.

$300 Question from Thermo.How is the energy of molecules of ice at0 oC different from the energy of liquidwater molecules at 0 oC?A. Water molecules of ice have less kinetic energyB. Water molecules of ice have more kineticenergyC. Water molecules of ice have less potentialenergyD. Water molecules of ice have more potential energy

$300 Answer from Thermo.

B. Water molecules of ice have more kineticenergy

$400 Question from Thermo.

Which statement is a correct interpretation of the graph?A.Solid and liquid are present during interval A.B.No heat is absorbed during interval B.C.The latent heat of fusion accounts for the energy absorbed

during interval C.D. Both liquid and gas are present during interval D.

$400 Answer from Thermo.

D. Both liquid and gas are present during interval D.

$500 Question from Thermo.What is the total heat required to raise the temperature of 500 g of water from 25 oC to 100 oC?(The specific heat of water is 4.18 J/oC/g.)A.8,360 J B.13,933 J C.156,750 J D.261,250 J

$500 Answer from Thermo.

C. 156,750 J

$100 Question from KineticsWhich potential energy diagram BEST shows how a catalyst affects a chemical reaction?

$100 Answer from Kinetics

A.

$200 Question from KineticsUnder normal conditions, hydrogen peroxide decomposes very slowly to produce oxygen and water. In the presence of manganese dioxide, the reaction proceeds at a much greater rate. The manganese dioxide can be recovered and used to speed the decomposition of still more hydrogen peroxide. How does manganese dioxide increase the rate of this reaction?A.by increasing the entropy change of the reaction B.by making the reaction exothermic instead of endothermicC.by providing a different route with a lower activation energyD. by increasing the energy difference between products and reactants

$200 Answer from Kinetics

C. by providing a different route with a lower activation energy

$300 Question from Kinetics

The equation below shows the combustion of methane (CH4) to produce carbon dioxide (CO2) and water (H2O).How does the rate at which H2O is produced compare with the rate at which CH4 is consumed?

A.H2O is produced half as fast as CH4 is consumed.B.H2O is produced equally as fast as CH4 is consumedC.H2O is produced twice as fast as CH4 is consumed.D.H2O is produced four times as fast as CH4 is consumed.

$300 Answer from Kinetics

C. H2O is produced twice as fast as CH4 is consumed.

$400 Question from KineticsThe equation for the production of sulfur trioxide (SO3) from sulfur dioxide (SO2) and oxygen (O2) is shown below.

Why does decreasing the pressure on the reacting gases decrease the rate of this reaction?A.Molecules collide with less kinetic energy.B.The number of collisions between molecules decreases.C.Collisions between molecules occur at different angles.D.The molecules slow down and have more time to react

when they collide.

$400 Answer from KineticsB. The number of collisions between molecules decreases.

$500 Question from KineticsWhat are two reasons that an decrease in temperature causes an decrease in reaction rate?A.Activation energy decreases and concentration decreases.B.Concentration decreases and the number of collisions

decreases.C. Kinetic energy of molecules decreases and activation

energy decreases.D. The number of collisions decreases and kinetic energy of

molecules decreases.

$500 Answer from Kinetics

D. The number of collisions decreases and kinetic energy of molecules decreases.

$100 Question from EquilibriumWhen a chemical reaction and its reverse are occurring at the same time and at the same rate, the reaction has achievedA.DisplacementB.EquilibriumC. ImbalanceD.Decomposition.

$100 Answer from Equilibrium

B. Equilibrium

$200 Question from EquilibriumWhat is the relationship between chemical equilibrium and therates of forward and reverse reaction?A.In equilibrium, the forward reaction rate must be greater

than the reverse reaction rate.B.In equilibrium, the forward reaction rate must be less than

the reverse reaction rateC.In equilibrium, the forward and reverse reaction rates must

be equal.D.In equilibrium, both forward and reverse reactions must

stop.

$200 Answer from Equilibrium

C. In equilibrium, the forward and reverse reaction rates must be equal.

$300 Question from Equilibrium

For the equilibrium:NH3 (aq) + HNO3 (aq) <==>NH4

+ (aq) + NO3- (aq)

What will happen if HNO3 is added? A.Shift leftB.Shift rightC.Stay the sameD.None of the above

$300 Answer from Equilibrium

B. Shift right

$400 Question from Equilibrium

For the equilibrium:NH3 (aq) + HNO3 (aq) <==>NH4

+ (aq) + NO3- (aq)

What will happen if NH3 is removed? A.Shift leftB.Shift rightC.Stay the sameD.None of the above

$400 Answer from Equilibrium

A. Shift left

$500 Question from Equilibrium

For the equilibrium:NH3 (aq) + HNO3 (aq) <==>NH4

+ (aq) + NO3- (aq)

What will happen if pressure is increased? A.Shift leftB.Shift rightC.Stay the sameD.None of the above

$500 Answer from Equilibrium

C. Stay the same

$100 Question from Nuclear and Biochem

The process of nuclear change in an atom of radioactive material is calledA.Nuclear decayB.Isotopes C.Nuclear massD.Radon.

$100 Answer from Nuclear and Biochem

A. Nuclear decay

$200 Question from Nuclear and Biochem

The type of nuclear radiation that can penetrate farthest through matter is calledA.RadonsB.Gamma raysC.Neutron emissionD.X rays

$200 Answer from Nuclear and Biochem

B. Gamma rays

$300 Question from Nuclear and Biochem

A sufficiently large nucleus is unstable and has a tendency to showspontaneous radioactive emissions. What is the reason for these spontaneous emissions?A.The nuclear force between the protons overcomes the

electrostatic force of repulsion.B.The electrostatic force of repulsion between the protons

overcomes the nuclear force.C.The electrostatic force of repulsion between the protons reduces

and becomes equal to the nuclear force.D.The nuclear force between the protons reduces and becomes

equal to the electrostatic force of repulsion.

$300 Answer from Nuclear and Biochem

B. The electrostatic force of repulsion between the protons overcomes the nuclear force.

$400 Question from Nuclear and Biochem

Which polymer is made up of glucose subunits?A.Crystals B.HydrocarbonsC.ProteinsD.Starches

$400 Answer from Nuclear and Biochem

D. Starches

$500 Question from Nuclear and Biochem

Proteins can be referred to as polypeptides. How are peptides related to amino acids?A.Peptides are the monomers, amino acids are the linkages

between them.B.Amino acids are the monomers, peptides are the linkages

between them.C.Amino acids and peptides are different names for the

same structures.D.Amino acids are the side groups, peptides the main chain

of a protein.

$500 Answer from Nuclear and Biochem

B. Amino acids are the monomers, peptides are the linkagesbetween them.

Final JeopardyThere are three main types of decay: alpha,beta, and gamma. Compare and contrast these3 types of decay and label the following as alpha, beta or gamma:

3919K electron + 39

20Ca

Final Jeopardy Answer