1.1 - Definition
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
What is a physical change? Provide an example.
💡 Hint: Think about changes that you can reverse.
Name a chemical change you observe in daily life.
💡 Hint: Consider items that transform into different substances.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
Which of the following is a characteristic of a physical change?
💡 Hint: Consider what happens to the substances involved in physical changes.
True or False: Chemical changes can often be reversed.
💡 Hint: Think about examples like burning paper.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have a sample of sodium bicarbonate (baking soda). Describe a physical and a chemical change it can undergo.
💡 Hint: Consider how the substance's identity changes.
Explain how energy changes during chemical reactions and provide an example.
💡 Hint: Think of how reactions can feel hot or cold.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.