2.2 - Key Features of Chemical Changes
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Practice Questions
Test your understanding with targeted questions
What is a chemical change?
💡 Hint: Think about changes you observe that can't be reversed.
Name one example of a chemical change.
💡 Hint: Consider changes where something is consumed or transformed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which of the following is a sign of a chemical change?
💡 Hint: Consider changes that alter the materials at a molecular level.
True or False: Chemical changes are usually reversible.
💡 Hint: Think about examples like cooking or burning.
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Challenge Problems
Push your limits with advanced challenges
You mix vinegar and baking soda. Describe the chemical changes and what evidence supports them.
💡 Hint: Consider the signs of reactions.
Describe the energy change when wood burns. What products result from this change?
💡 Hint: Focus on what happens before and after burning.
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