Question 1

T or F?  As oppositely charged particles move closer together, there electrostatic potential energy increases.

Accepted Answer

True

Answer

False

Answer

Huh?

Question 2

T or F?  Distances between oppositely charged particles are usually measured in meters.

Accepted Answer

False

Answer

True

Answer

Huh?

Question 3

T or F?  When ionic bonds form, chemical potential energy decreases and is released.

Accepted Answer

True

Answer

False

Answer

Huh?

Question 4

T or F?  "The total energy of the universe is constant" is the first law of thermodynamics.

Accepted Answer

True

Answer

False

Answer

Huh?

Question 5

Imagine you have some gas inside a piston.  The "system" would be

Accepted Answer

the gas inside the piston

Answer

the piston

Answer

the cylinder holding the piston, the piston, and the gas inside it

Answer

the gas and the piston

Question 6

A negative value for the change in energy means that

Accepted Answer

there was a net loss of energy by the system

Answer

work was done by the system

Answer

the change in energy of a system cannot be negative

Answer

the system loses heat energy

Question 7

A state function

Accepted Answer

all of these are true about state functions

Answer

is pathway independent

Answer

is represent by a capital letter

Answer

only depends on initial and final states of the system

Question 8

T or F?  Enthalpy is a state function.

Accepted Answer

True

Answer

False

Answer

Huh?

Question 9

True or False?  Pressure volume work ONLY applies to systems of gases.

Accepted Answer

True

Answer

Huh?

Answer

False

Question 10

True or False?  Changes in enthalpy must be determined at a constant temperature.

Accepted Answer

False

Answer

Huh?

Answer

True

Question 11

An endothermic reaction takes place in a glass flask.  Which of the following statements is TRUE?

Accepted Answer

The reaction gets warmer and the flask gets colder

Answer

The reaction gets colder and the flask gets warmer

Answer

The reaction and the flask both get warmer

Answer

The reaction and the flask both get colder

Question 12

True or False?  "Enthalpy of reaction" and "heat of reaction" are the same thing.

Accepted Answer

True

Answer

Who knows?

Answer

False

Question 13

True or False?  For a given reaction, the enthalpy of reaction is NOT stoichiometrically dependent.

Accepted Answer

False

Answer

Wait...what?

Answer

True

Question 14

True or False?  The enthalpy change for a reaction depends on the states of the reactants and the products.

Accepted Answer

True

Answer

Huh?

Answer

False

Question 15

Specifically, a calorimeter measures

Accepted Answer

heat flow

Answer

all of these

Answer

q or heat energy

Answer

enthalpy

Question 16

Which of the following is NOT true about the heat capacity and/or specific heat of a substance?

Accepted Answer

One is based on water while the other is specific to the substance in question.

Answer

Temperature change is a part of both of these.

Answer

The greater the heat capacity, the greater the amount of heat energy needed to change the temperature

Answer

They are both dependent on the mass of a substance (more mass = higher values)

Question 17

Which of the following is NOT true about constant-pressure (coffee-cup) calorimetry?

Accepted Answer

It is often used for combustion reactions.

Answer

The pressure is the atmospheric pressure of the room.

Answer

q for the solution is set equal to -q for the reaction.

Answer

It is often used for two aqueous solutions.

Question 18

Which of the following is NOT true about Hess's law?

Accepted Answer

The change in enthalpy is dependent upon the number of steps that the reaction goes through.

Answer

It mirrors the steps in and enthalpy or energy diagram.

Answer

It depends upon the amount of matter and the phases of the reactants and products.

Answer

The change in enthalpy is equal to the sum of the enthalpy changes of the steps.

Question 19

Which of the following is NOT true about bond enthalpy?

Accepted Answer

It is independent of the amount of the substance.

Answer

It is always a positive quantity.

Answer

It is the enthalpy change for the breaking of a bond.

Answer

Using bond enthalpies to calculate enthalpy of reaction is very similar to Hess's law.

Question 20

Which of the following statements applies to YOU...

Accepted Answer

All of these apply.

Answer

I am putting things off until the last minute, so am struggling to do well.

Answer

I am having a difficult time keeping a studying schedule at home.

Answer

I need to read/review the chapter material better before attempting these quizzes.

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