Mississippi Science P.7.5D.2
The Standard
- P.7.5D
- Students will demonstrate an understanding of chemical formulas and common chemical substances to predict the types of reactions and possible outcomes of the reactions.
Design and conduct scientific investigations to support evidence that chemical reactions (e.g., cooking, combustion, rusting, decomposition, photosynthesis, and cellular respiration) have occurred.
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 plan and run a fair test of a suspected chemical reaction. They record what changes, compare the results with a control, and explain what the evidence suggests.
What Mastery Looks Like
- A student changes one material while keeping amounts and conditions the same. They record observations from both tests and use the difference to support a claim that a reaction occurred.
Common Misconceptions
- Students may think any bubbles prove a reaction, even when water boils. They may also change several things at once, making it hard to tell what caused the result.
How to Assess It
- Give pairs baking soda, vinegar, water, two cups, and a measuring spoon. Ask them to plan and run a fair test, then write what they kept the same, what they saw, and whether the results support a reaction.
Lesson moves
Ways to Teach It
Mix equal amounts of baking soda with vinegar and water in separate clear cups; have students compare bubbling and record both results.
Show photos of a rusty nail and a wet nail; ask students what they would measure over several days to test for rust.
Hand out cards showing boiling water, frying an egg, rusting iron, and dissolving sugar; pairs sort them and defend each choice.
Show a photo of a rusty bicycle chain; ask students to plan a moisture test using two identical nails.
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Printable P.7.5D.2 Worksheet
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Related Standards
- P.7.5D.1
Analyze evidence from scientific investigations to predict likely outcomes of chemical reactions.
- CHE.6.2
Plan, conduct, and communicate the results of investigations to demonstrate different types of simple chemical reactions.
- PHS.4.2
Design and conduct investigations to produce evidence that mass is conserved in chemical reactions (e.g., vinegar and baking soda in a Ziploc© bag).
- PHS.4.1
Design and conduct experiments to investigate physical and chemical changes of various household products (e.g., rusting, sour milk, crushing, grinding, tearing...
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