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 enthalpy?
💡 Hint: Consider its relation to internal energy and pressure.
Question 2
Easy
Define an exothermic reaction.
💡 Hint: Think about heat flow in the context of surroundings.
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 a negative ΔH indicate about a chemical reaction?
- It absorbs heat
- It releases heat
- It has no effect
💡 Hint: Think about the flow of heat in relation to the surroundings.
Question 2
True or False: All endothermic reactions have a positive ΔH.
- True
- False
💡 Hint: Consider how heat interacts with the system.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the standard enthalpy of combustion of a compound is -600 kJ/mol, how much energy would be released when 2 moles of this compound are burned?
💡 Hint: Multiply the enthalpy change by the number of moles.
Question 2
Using Hess's Law, if the enthalpy change for a reaction A → B is -50 kJ and for B → C is -30 kJ, what is the total enthalpy change for A → C?
💡 Hint: Sum the individual enthalpy changes together.
Challenge and get performance evaluation