Chem 112 Chapter 9 T/F
Quiz
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Chemistry, Fun
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University
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Kyle Butzke
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a boulder rolls down a hill, its kinetic energy at the bottom is equal to its change in potential energy (assuming a frictionless surface).
True
False
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When fuel is burned, the energy of the heat and light produced is equal to the difference in chemical potential energy between the products and reactants of the reaction.
True
False
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following are true?
Energy is conserved, but can be transferred between different forms.
For exothermic reactions, (delta)H is always positive.
For endothermic reactions. (delta)H is always positive.
For endothermic reactions, heat can be treated as a product.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following are true?
i. If a beaker gets cold during a reaction, it means that the reaction was exothermic.
ii. If a beaker gets hot during a reaction, it means that the reaction was endothermic.
Only i. is true
Only ii. is true
Both i. and ii. are true
Neither i. nor ii. is true
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is false?
The change in enthalpy is the heat transferred to a system under constant pressure and assuming only expansion work.
The enthalpy of a compound can be determined in absolute terms.
The enthalpy of formation of a compound is defined relative to its elements in their standard state.
The enthalpy of formation of an element in its standard state is zero.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true?
The gas phase of a compound always has higher enthalpy than its liquid phase.
The solid phase of a compound always has higher enthalpy than its liquid phase.
The solid phase of a compound always has higher enthalpy than its gas phase.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true?
i. Heating a compound always increases its enthalpy.
ii. Temperature is a measure of motion at the atomic level.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
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