Chemistry

Chemistry, 13.11.2019 07:31, animedragonking459

Which type of science studies how substances change?

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Chemistry, 10.07.2019 10:00, hcortez8846

Students are studying how two substances react. the students mix substance 1 with substance 2 in a solution. later the students boil the solution, releasing substance 1 as a gas and leaving substance 2 as a solid. what type of change is described in the paragraph above? how do you know? this is a chemical change, because the two substances were mixed together. this is a chemical change, because the two substances were separated chemically by boiling. this is a physical change, because the two substances were separated physically by boiling. this is a chemical change, because a gas was released.

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The type of science that studies the physical features of nature is known as blank science

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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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