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English, 01.07.2019 01:50, zoeybuch5

When a solid melts into a liquid what is happening? a. physical change b. chemical change c. nuclear change d. chemical reaction

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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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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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Biology, 06.09.2019 03:10, keyshawn437

Which answer below correctly identifies the type of change and the explanation for the separation of the iron with sulfur? o physical change because even though a color change occured, each solid maintained its original properties, which could be seen as soon as the magnet was applied physical change because no temperature change was observed, which would be an indicator of chemical change chemical change because a color change was observed, which indicated that a new substance was formed chemical change because the results depended on the interaction of two substances

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Physics, 17.09.2019 01:30, jadenyankey

Giving out 30 pionts i need right choose the term that best completes each sentence 1.the higher the temperature of something, the greater its 2. the change in state from gas to liquid is 3. energy that comes from bonds within matter is 4. the change in state from liquid to gas is 5. gas bubbles forming throughout the liquid is 6. liquid changing to gas only at the surface is 7. the change in state from solid to liquid is 8. the change in state from liquid to solid is 9. that during any change, the amount of energy stays the same 10. another term for a chemical change is 11. particles pass directly from solid to gaswords: chemical energythermal energyevaporation melting freezing boiling law of conservation vaporization condensation sublimationchemical reaction

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