2.4 - Signs of a Chemical Change
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Practice Questions
Test your understanding with targeted questions
What is a sign of a chemical change?
💡 Hint: Think of what indicates a new substance has formed.
Is the rusting of iron a physical or chemical change?
💡 Hint: Consider whether a new substance with different properties is created.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which of the following is NOT a sign of a chemical change?
💡 Hint: Consider what signifies a reaction affecting composition.
True or False: Production of light during a reaction always indicates a chemical change.
💡 Hint: Think about what happens in reactions like combustion.
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Challenge Problems
Push your limits with advanced challenges
Explain an everyday activity involving a chemical change and identify all the observable signs.
💡 Hint: Think of recreational cooking or baking.
Design an experiment that demonstrates at least two signs of a chemical change, detailing the steps and expected results.
💡 Hint: Consider safe kitchen items to use.
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