Part 1: -Describe what happens when you add heat to a solid at its melting point

Question

Part 1:
-Describe what happens when you add heat to a solid at its melting point. Discuss what happens to the added heat energy.

-Describe what happens when you add heat to a liquid at its boiling point. Discuss what happens to the added heat energy.

Part 2:
-On a hot summer's day you notice that after a brief shower the puddles of rainwater get smaller and eventually disappear. Describe the process that is occurring. In your description be sure sure to mention the particles (water molecules in this case) of water in the puddles and where they are going. What is the name of this process?

Explanation / Answer

Part 1)

a) At a particular pressure it is impossible, to heat a solid above its melting point because the heat that enters the solid at its melting point is used to convert the solid into a liquid. The temparature remains constant until all solid particles converts to liquid, and energy is utilized to break intermolecular bonds/ inter ionic bonds in the solid.

b)

At a particular pressure it is impossible, to heat a liquid above its boiling point because the heat that enters the liquid at itsboiling point is used to break attraccttion between intermolecular bonds in the liquid. The temparature remains constant until all liquid molecules converts to vapour.

Part 2)

Some water droplets get evaporated in to atmosphere.while some water get adsorbed by soil particles.

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