Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is internal energy?
💡 Hint: Think about what an object contains in terms of energy.
Question 2
Easy
What does a bomb calorimeter measure?
💡 Hint: Consider what happens to the temperature of water in the calorimeter.
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 ∆U represent in thermodynamics?
- Total work done
- Total heat absorbed
- Change in internal energy
- Constant volume
💡 Hint: What does the delta symbol (∆) usually refer to in science?
Question 2
In a bomb calorimeter, what remains constant?
- True
- False
💡 Hint: Consider how the calorimeter is set up.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A system absorbs 300 J of heat and does 150 J of work. Calculate ∆U.
💡 Hint: Apply the formula ∆U = q + w.
Question 2
During a chemical reaction, 1000 J of heat is released while the volume expands doing 200 J of work. Find ∆U.
💡 Hint: Keep in mind the signs of energy changes during expansion.
Challenge and get performance evaluation