Chemistry, 18.10.2020 09:01, williamsvilletiles
This lab question is: How can you distinguish a physical change from a chemical change?
Which statements below are an appropriate hypothesis in response to this question? Check all that apply.
A. If a substance changes state of matter (e. g., liquid to gas), then this is a physical change because the original properties of the substance have not changed.
B. If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.
C. If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.
D. If a precipitate is formed when two substances are mixed, then a chemical change has taken place because precipitates are new substances.
Answers: 3
Chemistry, 21.06.2019 16:30, kidlol
In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and β0.44 v for fe/fe2+? ag+ + fe β ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse
Answers: 1
Chemistry, 22.06.2019 15:30, ricardotavarez6
How does a large body of water, such as the ocean, influence climate?
Answers: 1
This lab question is: How can you distinguish a physical change from a chemical change?
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