Biology
Biology, 23.09.2019 21:30, granthazenp5e9mj

Physical changes produce new substances. true or false?

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Ou are given two jars, each of which contains an unknown substance. you are asked to determine if the substances are different from one another or if each jar contains the same substance. what should you do to complete this task? question 10 options: compare the physical states of the substances. if the substances are in the same state, then they are the same. compare both the physical and the chemical properties of the substances. if the substances perform the same in a variety of tests, then they are the same. compare the appearances of the substances. if the substances look the same, then they are the same. compare only the physical properties of the substances. if the substances have the same density or melting point, then they are the same.
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