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jolleyrancher78
27.06.2019 •
Chemistry
What are the 4 changes in matter that can occur during a chemical reaction?
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Ответ:
Ответ:
1B: He could add books or something under the front or back legs in order to increase/decrease the incline, therefore imitating the hypothesis.
1C: He can change out the sand grains to finer ones, or coarser ones, and record his results of each test.
2: If he sets the model at a steep incline and tests it with coarse sand and fine sand, seeing which one makes a narrower, deeper hole.