Practice First Law Of Thermodynamics (6.4) - Chemical Thermodynamics

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6 sample questions

Question 1.
What does the First Law of Thermodynamics state?
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Think about energy changes during a physical or chemical process.
Question 2.
Define exothermic reaction with an example.
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It's related to burning processes.
3Question 3.
What is the statement of the First Law of Thermodynamics?
- Energy can be created and destroyed.
- Energy can only be transformed.
- Energy cannot change forms.
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Consider energy's conservation.
4Question 4.
A process that absorbs heat is called?
- Exothermic
- Endothermic
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Focus on heat absorption versus release.
Question 5.
In a closed system, 200 J of heat is added (Q = 200 J) and 50 J of work is done by the system (W = 50 J). What is the change in internal energy?
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Use the formula carefully to determine energy change.
Question 6.
Design an experiment to demonstrate an exothermic reaction. What materials would you use, and what observations would you expect?
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Use common reactions that are safe and observable.

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