
Thermochemistry Concepts and Applications

Interactive Video
•
Chemistry
•
10th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main focus of thermochemistry?
Study of chemical reactions
Study of chemical elements
Study of energy changes in chemical reactions
Study of chemical bonds
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Hess's Law, what is true about the enthalpy change of a reaction?
It depends on the pathway of the reaction
It is always zero
It is independent of the reaction pathway
It is always positive
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example given, what is the final enthalpy change for the reaction forming carbon monoxide?
220.8 kJ
-110.4 kJ
110.4 kJ
-220.8 kJ
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the standard enthalpy of formation?
The energy change when a compound is dissolved in water
The change in enthalpy when a compound is formed from its elements in their standard states
The energy required to break a bond
The heat absorbed during a chemical reaction
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the enthalpy change of a reaction at standard conditions calculated using standard enthalpies of formation?
Difference between enthalpies of reactants and products
Sum of enthalpies of reactants and products
Sum of enthalpies of products minus reactants
Sum of enthalpies of reactants minus products
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the temperature of water when it reaches its boiling point and heat is continuously added?
Temperature increases
Temperature fluctuates
Temperature remains constant
Temperature decreases
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Delta H fusion?
The enthalpy change when a liquid turns into a solid
The enthalpy change when a gas turns into a solid
The enthalpy change when a solid turns into a liquid
The enthalpy change when a liquid turns into a gas
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