Phase changes are transitions between solid, liquid, and gas phases. For example

Question

Phase changes are transitions between solid, liquid, and gas phases. For example, ice melting is an example of a phase change from a solid (ice) to a liquid (water). Phase changes involve changes in energy. Which of the following statements regarding phase changes are true? Select all that apply. Sublimation converts a gas to a solid. Melting converts a solid to a liquid. Freezing converts a gas to a Liquid. Deposition converts a gas to a solid. Sort each of the following as exothermic or endothermic. If something is neither exothermic nor endothermic, move it to the "neither" bin

Explanation / Answer

Answer for question 1: Following statements are true:

Melting converts a solid to a liquid.

Deposition converts a gas to a solid

Answer for question 2:

Explanation:

Deposition...............from gas to solid.....................energy released ..................................hence exothermic

Freezing..................from liquid to solid................. energy released ...................................hence exothermic

Condensation..........from gas to liquid/solid.......... energy released ...................................hence exothermic

Melting....................from solid to liquid.................. energy supplied.....................................hence endothermic

Vaporization............from liquid to gas....................energy supplied.....................................hence endothermic

Sublimation............from solid to gas......................energy supplied.....................................hence endothermic =

Exothermic Endothermic Neither Deposition Melting Freezing Vaporization Condensation Sublimation

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