Mathematics

Mathematics, 27.07.2019 23:30, joheste2831

Substance means a object b liquid c material d solid

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Biology, 23.06.2019 06:30, starswarsfan

(asap! big points! ) an unknown substance is heated from 10 °c to 25 °c. the table below shows the state of the substance at different temperatures. first row: time (minutes) second row: temperature of liquid (degrees celsius) third row: state of matter 0 10 solid 2 15 solid 4 17 6 17 8 17 10 23 liquid 12 25 liquid which statement is correct about the unknown substance? a. its melting point is 17 °c. b. its melting point is 15 °c. c. the substance sublimes at 15 °c. d. the substance exists as a gas at 17 °c.

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Biology, 04.07.2019 15:40, sierram298

Suppose that a substance in a beaker is heated over a burner in a science lab. which observation would most likely indicate that a chemical change has occurred in the substance? if the substance is a liquid or solid, an increase in temperature would indicate a chemical change. if the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change. if the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change. if the substance is a liquid or solid, production of an odor would indicate a chemical change.

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Chemistry, 05.09.2019 17:20, kienzie1

Substance a and b are chemically exactly the same. the molecules in substance a move much faster and are less ordered than the molecules in substance b, which vibrate slowly and are arranged in an fixed, orderly, regular array. which statement could be true? substance a is a liquid, while substance b is a liquid or gas. substance a is a solid, while substance b is a liquid or gas. substance a is a liquid or gas, while substance b is a solid. substance a is a liquid or gas, while substance b is a gas.

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Chemistry, 23.10.2019 02:00, emo239

When the temperature of a substance decreases to the substance's freezing point, the substance will begin to change from a to a (assume the substance is at standard atmospheric pressure.) a gas, solid b. liquid, gas c. d. solid gas liquid, solid

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