P.7.5E.3: Compare and contrast balanced and unbalanced chemical equations to…
Compare and contrast balanced and unbalanced chemical equations to demonstrate the number of atoms does not change in the reaction.
The Mississippi College- and Career-Readiness Standards for Science (2018) outcome P.7.5E.3 (Physical Sciences) for Grade 7 says: “Compare and contrast balanced and unbalanced chemical equations to demonstrate the number of atoms does not change in the reaction.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Mississippi College- and Career-Readiness Standards for Science (2018).
Kitchen Chemistry Grades 7–8
Fizzing, curdling and colour changes with things from the grocery store. Students gather evidence of new substances, weigh a reaction in a sealed bottle, and turn red cabbage into an acid detector.
- Where does the mass go? 50–60 min
Teams weigh baking soda and vinegar reacting in an open cup, then in a capped pop bottle. The open cup gets lighter and the capped bottle doesn't, until they open it. Students use atoms to explain why mass is never lost in a reaction, only let out.
Printable practice for P.7.5E.3
These pages practise a closely related idea; the match to P.7.5E.3 is partial.
- Kitchen Chemistry workbook included with the unit
1 word wall, 1 English-support page, 1 practice page, 1 reading, 1 unit review, 1 unit test, with answer keys.
Need just this outcome? Build a custom pack from these pages, with its answer key, in about a minute. Custom packs come with All-access and school licences.
Compared with NGSS: MS-PS1-5 (partial).
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