Chemistry

Chemistry, 29.08.2019 20:40, eweqwee3147

What happens to the chemical identity of a substance during a physical change?

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Chemistry, 24.06.2019 17:00, MysteryDove12

What is the difference between a physical change and a chemical change? (2 points) a physical change is only a phase change but a chemical change can be any type of change. a physical change does not change the identity of the substance but the chemical change does. a physical change breaks and forms bonds but a chemical change does not change the bonds. a physical change only changes the color but a chemical change never changes the color.

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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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Chemistry, 30.09.2019 08:30, nell1234565

Match each item with the correct statement below. a. can be observed without any change in the identity of the substance. b. the capacity to do work. c. can be observed only when there is a change in composition of a substance. d. substance that changes to a gas easily at room temperature. e.the fact that matter can be neither created nor destroyed in a chemical change. f. any chemical reaction that gives off energy. g. the change of one or more substances into other substances. h another term for chemical change. i. the amount of matter contained in a unit of volume. j. any chemical reaction that absorbs energy. k.the type of change in which the identity of substances does not change. choose from these 1. energy 2. volatile 3. chemical reaction 4. chemical change 5. endothermic 6. exothermic 7. density 8. physical property 9. law of conservation of mass 10. chemical property 11. physical change

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Chemistry, 01.11.2019 05:31, katielloyd

What is the difference between a physical change and a chemical change? a physical change is only a phase change but a chemical change can be any type of change. a physical change does not change the identity of the substance but the chemical change does. a physical change breaks and forms bonds but a chemical change does not change the bonds. a physical change only changes the color but a chemical change never changes the color.

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