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 a physical change?
💡 Hint: Think about ice and water.
Question 2
Easy
Give an example of a chemical change.
💡 Hint: Consider what happens when you set something on fire.
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 is a chemical change?
- A change in state
- A formation of new substances
- A reversible reaction
💡 Hint: Remember the example of burning wood.
Question 2
True or False: A physical change can be easily reversed.
- True
- False
💡 Hint: Consider how ice and water interact.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A piece of wood is burned in a fireplace. Describe the physical and chemical changes that occur.
💡 Hint: Think about what happens to the wood throughout the process.
Question 2
Balance the equation for the combustion of propane: C3H8 + O2 → CO2 + H2O.
💡 Hint: Count the number of each atom on both sides.
Challenge and get performance evaluation