MCAS Chemistry Exam Practice

Category - Chemistry

Which of the following examples is evidence of a physical change?
  1. Ice cream melts in a bowl.
  2. A silver spoon tarnishes over time.
  3. An electrical current splits water into hydrogen and oxygen.
  4. A person inhales oxygen and exhales carbon dioxide and water.
Explanation
Answer: A - Ice cream melts in a bowl.
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