
Chapter 5 - Energetics and Thermochemistry
Authored by Kathryn Allen
Chemistry
11th - 12th Grade
NGSS covered
Used 11+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are standard conditions for energy change?
Pressure of 100 kPa and temperature of 298 K
All solutions are 1 mol/dm3
All substances are in the solid state
All substances are in the gaseous state
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What energy changes occur when chemical bonds are formed and broken?
Energy is absorbed when bonds are formed and when they are broken
Energy is released when bonds are formed and when they are broken
Energy is absorbed when bonds are formed and released when they are broken
Energy is released when bonds formed and absorbed when they are broken
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Calculations for the enthalpy of a reaction based on bond enthalpies may be off because: (Choose two)
Substances are not in the aqueous state
It's not a gaseous reaction
They may not take into account intermolecular forces
They may not take into account intramolecular forces
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which combination is correct for a chemical reaction that absorbs heat from the surroundings?
Exothermic, Positive ΔH
Exothermic, Negative ΔH
Endothermic, Positive ΔH
Endothermic, Negative ΔH
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the enthalpy level diagram, what is the sign for ΔH and what is this type of reaction called?
ΔH positive, exothermic
ΔH negative, exothermic
ΔH positive, endothermic
ΔH negative, endothermic
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which metal will show the greatest increase in temperature if 50 J of energy were added to it?
Aluminum
Nickel
Copper
Gold
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement is correct for the reaction shown?
564 kJ of energy is released for every mole of CO reacted
564 kJ of energy is absorbed for every mole of CO reacted
282 kJ of energy is released for every mole of CO reacted
282 kJ of energy is absorbed for every mole of CO reacted
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