PHASE DIAGRAMS

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WHAT IS A PHASE DIAGRAM?

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A graphical representation showing the phases of a substance at different temperatures and pressures.

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WHAT DOES THE TRIPLE POINT REPRESENT?

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The unique set of conditions at which all three phases (solid, liquid, gas) coexist in equilibrium.

Front

WHAT IS THE TEMPERATURE FOR THE TRIPLE POINT OF WATER?

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0.01°C or 273.16 K.

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WHAT IS MELTING?

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The phase change from solid to liquid due to the absorption of heat.

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WHAT IS FREEZING?

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The phase change from liquid to solid due to the release of heat.

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WHAT IS VAPORIZATION?

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The phase change from liquid to gas, which can occur through boiling or evaporation.

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WHAT IS CONDENSATION?

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The phase change from gas to liquid, typically occurring when gas cools.

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WHAT IS SUBLIMATION?

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The phase change from solid directly to gas without passing through the liquid phase.

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WHAT IS DEPOSITION?

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The phase change from gas directly to solid without passing through the liquid phase.

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WHAT IS AN ENDOTHERMIC PROCESS?

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A process that absorbs energy (heat) from its surroundings.