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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define internal energy.
💡 Hint: Consider the energies of particles in a system.
Question 2
Easy
What is enthalpy?
💡 Hint: Think about its relation to pressure and volume.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does ΔE represent in thermodynamics?
- A measure of temperature change
- The change in internal energy
- The measure of kinetic energy
💡 Hint: Recall what ΔE stands for in energy terms.
Question 2
True or False: Enthalpy is a state function.
- True
- False
💡 Hint: Think about what characterizes state functions.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A chemical reaction has an internal energy change of 200 kJ; however, 50 kJ of work is done on the system. What is the heat exchanged with the surroundings?
💡 Hint: Think about the relationship between internal energy change and the work done.
Question 2
A reaction is exothermic with ΔH = -100 kJ. If the enthalpy of formation for the reactants is -200 kJ, what is the enthalpy of formation for the products?
💡 Hint: Consider how reactants and products relate through enthalpy change.
Challenge and get performance evaluation