ayon left on the sidewalk on a very hot sunny day. (alternative of sidewalk: anywhere if it was exposed under the heat of the sun

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Q: Contrast potential and kinetic energy.

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Q: What would happen to an objects potential energy as it begins moving?

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Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.