
Thermochemical Equations and Energy Conversions Quiz

Interactive Video
•
Chemistry
•
10th - 12th Grade
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean when the energy term is placed on the product side of a chemical equation?
The reaction is at equilibrium.
The reaction absorbs energy.
The reaction is exothermic.
The reaction is endothermic.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the state of water affect its heat of reaction during decomposition?
Gaseous water has a higher heat of reaction than liquid water.
Liquid water has a higher heat of reaction than gaseous water.
Both states have the same heat of reaction.
The state of water does not affect its heat of reaction.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a reversible reaction, what happens to the heat of reaction when the direction is reversed?
Neither the magnitude nor the sign changes.
The magnitude remains the same but the sign changes.
The magnitude and sign both change.
The magnitude changes but the sign remains the same.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between energy and moles in a chemical reaction?
Energy is inversely proportional to the number of moles.
Energy is equal to the number of moles.
Energy is independent of the number of moles.
Energy is directly proportional to the number of moles.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much energy is released in the combustion of 100 moles of methanol (CH4O)?
7,026 kilojoules
145,200 kilojoules
14,520 kilojoules
70,260 kilojoules
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in converting grams of a substance to energy in a chemical reaction?
Convert energy to moles.
Convert grams to moles.
Convert moles to energy.
Convert energy to grams.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of CH4O are needed to produce 100 kilojoules of energy?
0.14 moles
14 moles
0.014 moles
1.4 moles
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