Chemistry

Chemistry, 08.07.2019 19:30, nunu5671

Different kinds of substances have different properties. compare and contrast the electrical properties of salts, metals, and acids.

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Chemistry, 29.06.2019 19:30, joejoefofana

Pure sodium metal explodes when it makes contact with water, and chlorine, in its natural state, is a deadly, poisonous gas. when these two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt. which of the following statements does this information support? a. when substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances. b. heat must be added in order to change the chemical properties of substances. c. when substances are chemically combined, the properties of the new substances that are formed are the same as the properties of the original substances. d. the properties of substances change during chemical reactions but then later go back to their original condition.

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Biology, 08.07.2019 18:30, avaleasim

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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Chemistry, 09.07.2019 19:00, kimmosley80

You 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 a. compare the physical states of the substances. if the substances are in the same state, then they are the same. b.compare the appearances of the substances. if the substances look the same, then they are the same. c.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. d.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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Chemistry, 26.07.2019 10:30, rscott400

Compare and contrast the properties of metals, metalloids, and nonmetals. identify groups and sections of the periodic table by group name and common properties.

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