Mississippi Science P.7.5A.3

Science7th GradePhysical Science

The Standard

P.7.5A
Students will demonstrate an understanding of the physical and chemical properties of matter.
Compare and contrast chemical and physical properties (e.g., combustion, oxidation, pH, solubility, reaction with water).

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 compare properties they can test without making a new substance, such as solubility, with properties that describe how a substance reacts. They use examples such as flammability, pH, rusting, and reactions with water.

What Mastery Looks Like

A student identifies sugar's solubility as a physical property. They identify rusting as evidence that iron reacts with oxygen and explain that pH describes how acidic a substance is.

Common Misconceptions

Students may call dissolving a chemical reaction because the solid disappears. They may think pH measures how much material is dissolved or that rust is just a change in color.

How to Assess It

Exit ticket: Sugar dissolves in water, an effervescent tablet fizzes in water, and an iron nail rusts. Name the property each example shows and label it physical or chemical.

Lesson moves

Ways to Teach It

  1. Test sugar and an effervescent tablet in separate clear cups of water; students record dissolving and bubbling, then classify the properties tested.

  2. Ask, 'Does a low pH mean a liquid has already reacted?' Have students explain what pH tells us about acidity.

  3. Give pairs cards labeled solubility, pH, reaction with oxygen, flammability, and color; have them sort the cards and defend two choices.

  4. Show a rusty bike chain and a sugar cube dissolving in tea; students name the chemical and physical properties each reveals.

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Printable P.7.5A.3 Worksheet

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