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2 cards from this section. Quick, good the night before a test.
What happens when ice melts?
Think about the state the ice changes to.
Is cutting paper a physical change or chemical change?
Consider if a new substance is formed.
Which of the following is a physical change?
Think about whether a new substance is created.
True or False: Physical changes are always irreversible.
Recall examples where the original substance can be returned.
Propose an experiment to observe both physical and chemical changes in a single scenario. Describe the changes and their classifications.
Think about what happens during the process and how energy is involved.
Compare and contrast physical and chemical changes in terms of energy. Provide examples for each.
Focus on how energy interacts with the substances before and after each change.
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