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Identify states of matter

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Identify states of matter — free printable Middle School Science worksheet

Students in middle school identify the defining characteristics of each state of matter — solid, liquid, and gas — at the particle level in this hard-level Physical Science worksheet on matter and particles. Teachers can use it to push students beyond surface-level observation toward a molecular explanation of why matter behaves differently in each state. It belongs in a Matter and Particles unit and prepares students for more advanced topics in chemistry and physics.

Learning objectives

  • Identify the states of matter and describe their properties at the particle level
  • Explain how particle arrangement and motion differ among solids, liquids, and gases
  • Predict how a substance's state will change when energy is added or removed

How to use this worksheet

  1. Select “Sign in / Sign up to download”, then sign in with Google or email to get the PDF from KiwiBee Printables.
  2. Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
  3. Use the included answer key to mark it in seconds.

Good for

ClassworkHomeworkWarm-upCentersSmall groups

Answer Key

Answer key for Identify states of matter — free printable Science worksheet

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