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  1. AP Chemistry
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Thermochemistry

Question 1
college-boardChemistryAPExam Style
1 mark

What basic role do catalysts play in chemical reactions according to their representation on an Energy Diagram?

Question 2
college-boardChemistryAPExam Style
1 mark

Which of the following descriptions best characterizes the following reaction: H₂O (g) -> H₂O (l)?

Question 3
college-boardChemistryAPExam Style
1 mark

How does an increase in temperature generally affect the rate of a chemical reaction as depicted on an energy diagram?

Question 4
college-boardChemistryAPExam Style
1 mark

Considering the periodic trends, which element would likely have the highest ionization energy?

Question 5
college-boardChemistryAPExam Style
1 mark

In an energy profile for a reaction with both endothermic and exothermic steps, which step is displayed by the lowest point on a diagram?

Question 6
college-boardChemistryAPExam Style
1 mark

When comparing atoms from Group I elements as they descend down their group, which one is expected to have the smallest second ionization energy?

Question 7
college-boardChemistryAPExam Style
1 mark

If the final energy level on an energy diagram is lower than the initial energy level, this indicates that the reaction is ___.

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Question 8
college-boardChemistryAPExam Style
1 mark

What role does a catalyst play in modifying an enzyme-catalyzed biological reactions’ energy diagram?

Question 9
college-boardChemistryAPExam Style
1 mark

Which factor would most likely increase the activation energy required for a chemical reaction to proceed?

Question 10
college-boardChemistryAPExam Style
1 mark

In an exothermic reaction's potential energy diagram, what does it mean if there is significant distance between energies of reactants and products?