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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What type of change is melting ice?
💡 Hint: It's when the form changes but not the identity.
Question 2
Easy
What does a chemical equation represent?
💡 Hint: Think of it as a recipe for a reaction.
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 involves the creation of a new substance?
- Physical
- Chemical
- Both
💡 Hint: Consider what happens when wood burns.
Question 2
True or False: Physical changes cannot be reversed.
- True
- False
💡 Hint: Think of melting ice - can it become solid again?
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the given equation and explain the significance of balancing in chemical reactions: C3H8 + O2 → CO2 + H2O.
💡 Hint: Consider the number of carbons and hydrogens in propane.
Question 2
Predict the product(s) and type of reaction: Na + Cl2 → ?
💡 Hint: Look at the elements and what they combine to form.
Challenge and get performance evaluation