Mississippi Science P.7.5B.1
The Standard
- P.7.5B
- Students will demonstrate an understanding about the effects of temperature and pressure on physical state, molecular motion, and molecular interactions.
Make predictions about the effect of temperature and pressure on the relative motion of atoms and molecules (speed, expansion, and condensation) relative to recent breakthroughs in polymer and materials science (e.g., self-healing protective films, silicone computer processors, previous/porous concrete).
2026 Mississippi College- and Career-Readiness Standards for Science · Organization of Matter and Chemical Interactions
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students predict how heating, cooling, and compressing a gas affect particle speed and spacing. They use those predictions to explain expansion, condensation, and how a self-healing film might behave when warmed.
What Mastery Looks Like
- Students predict that heating generally speeds particles and expands materials, while cooling can cause vapor to condense. They explain that compressing a gas brings particles closer together but does not always make them faster. They predict that a warm self-healing film may repair a scratch faster than a cold one.
Common Misconceptions
- Students may think particles themselves get bigger when a material expands. They may think pressure always makes particles move faster, or that condensation turns a gas into a solid.
How to Assess It
- Exit ticket: An air-filled balloon is warmed, then squeezed without changing its temperature. Draw the particles after each change and label their speed and spacing.
Lesson moves
Ways to Teach It
Have pairs gently press a capped plastic syringe, then sketch the air particles before and after compression.
Ask, "Why might a scratched self-healing phone film repair faster in a warm room than a cold one?"
Give pairs cards labeled warm gas, cool gas, and compressed gas; have them match each to particle speed and spacing.
Compare a capped plastic bottle left in the sun with one kept cool; ask which would feel firmer and why.
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Printable P.7.5B.1 Worksheet
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Related Standards
- CHE.8.3
Analyze and interpret data to predict the effect of temperature and pressure on solids and gases dissolved in water.
- P.7.5B.3
Ask questions to explain how density of matter (observable in various objects) is affected by a change in heat and/or pressure.
- P.7.5B
Students will demonstrate an understanding about the effects of temperature and pressure on physical state, molecular motion, and molecular interactions.
- PHS.8.2
Apply particle theory to phase change and analyze freezing point, melting point, boiling point, vaporization, and condensation of different substances.
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