Chemistry
Chemistry, 04.08.2019 07:20, faithcalhoun

Can a physical change, change what a substance is

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Chemistry, 05.07.2019 18:00, jacobd578
Which statement describes one of the main differences between a physical and a chemical change? a chemical change involves reactants and products, whereas a physical change involves only reactants. a physical change is a change of state, whereas in a chemical change the substance keeps the same form. a physical change brings about a different form of the same substance, whereas a chemical change forms a different substance. a chemical change caused by adding or removing heat energy can usually be reversed, whereas a physical change can generally not be reversed.
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Physics, 23.08.2019 19:30, jackchelly
Which best describes why a physical change differs from a chemical change? a. a physical change predicts the behavior of a substance when in a reaction, whereas a chemical change is used to identify characteristics of a substance. b. a physical change results in a new substance being formed, and a chemical change results in a different state of matter. c. a physical change happens spontaneously, and a chemical change is used by scientists to create new substances. d. a physical change will result in a different state of matter, whereas a chemical change results in a new substance being formed.
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Physics, 06.10.2019 23:30, shayla3613
Which best describes why a chemical change is different than a physical change? a. a chemical change results in a different state of matter, and a physical change results in a new substance being formed. b. a chemical change is used to identify characteristics of a substance, and a physical change identifies the behavior of a substance when in a reaction. c. a chemical change results in a new substance being formed, whereas a physical change will result in a different state of matter. d. a chemical change is used by scientists to create new substances, and a physical change happens naturally.
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Biology, 29.10.2019 23:31, bferguson8956
Which statement best describes why a chemical change is different from a physical change? a) a chemical change results in a different state of matter, and a physical change results in a new substance being formed. b) a chemical change is used to identify characteristics of a substance, and a physical change identifies the behavior of a substance when in a reaction. c)a chemical change is used by scientists to create new substances, and a physical change happens naturally. d) a chemical change results in a new substance being formed; whereas, a physical change will result in a different state of matter.
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