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 happens to the wax of a candle when it melts?
💡 Hint: Think about the state change.
Question 2
Easy
Name one product formed when a candle burns.
💡 Hint: Remember the gas released?
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 type of change occurs when wax melts?
- Chemical Change
- Physical Change
- Both
💡 Hint: Consider the definition of physical changes.
Question 2
True or False: Burning a candle is solely a physical change.
- True
- False
💡 Hint: Think about the reaction products when a candle burns.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Explain how you would set up an experiment to demonstrate the physical and chemical changes occurring in a candle when burnt. What observations would you make?
💡 Hint: Think about different tools you may use to measure changes.
Question 2
How would you differentiate the wax before and after burning in terms of its chemical composition?
💡 Hint: Focus on molecular composition before and after the reaction.
Challenge and get performance evaluation