8.1.6: Develop a model to describe how the total number of atoms does not…
Develop a model to describe how the total number of atoms does not change in a chemical reaction, indicating that matter is conserved.
The Utah Science with Engineering Education (SEEd) Standards outcome 8.1.6 (Physical Sciences) for Grade 8 says: “Develop a model to describe how the total number of atoms does not change in a chemical reaction, indicating that matter is conserved.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Utah Science with Engineering Education (SEEd) Standards.
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 8.1.6
These pages practise a closely related idea; the match to 8.1.6 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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