Do you think there is a single criteria we can use to determine whether a solid is crystalline or amorphous from our macroscopic observations? Include a reason to support your answer. Why or why not?

Q: , then you can help me on question 1.

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Q: 7. If 18.0 grams of CO2 are produced, how many grams of H₂O are produced. 2C₂H4(+602 → 4 CO2 + 4H₂O

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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.