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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