Chemistry, 05.03.2021 17:50 mommyp1973
3. Divers found two substances on the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different?
Substance 1 has a . . .
A weaker attraction between its molecules than Substance 2. Its molecules now move in place.
B weaker attraction between its molecules than Substance 2. Its molecules now move around each other.
D stronger attraction between its molecules than Substance 2. Its molecules now move away from each other
Answers: 3
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Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
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The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.
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The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
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3. Divers found two substances on the bottom of the ocean. At room temperature, both substances are...
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