Entry Exam Category: Graduate & Professional Program Admission Exams
Course: Praxis
Exam: Praxis Elementary Science 5005 Practice Test

Practice Question

Which of the following is always true of a chemical change?

Answer Choices

  • A: Color, shape, or texture is altered.
  • B: Mass is increased.
  • C: A new substance is formed.
  • D: Gas or vapor is generated.

Correct Answer: C

Rationale: Chemical: new substances. A: Can be physical. B: Mass conserved. D: Not always. New matter defines chemical.

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