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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Graphite (pencil lead) and Diamonds have the same chemical formula but diamonds are formed at greater temperatures and pressures.
A
geology
B
meteorology
C
astronmy
D
oceanography
Explanation: 

Detailed explanation-1: -Molecular structure of diamond and graphite Both have the same chemical formula that is C but they do not have a molecular formula. There each carbon atom is covalently bonded with 4 different carbon atoms in a diamond. It forms a tetrahedral arrangement to create a rigid structure.

Detailed explanation-2: -Unlike diamond, graphite can be used as a lubricant or in pencils because the layers cleave readily. It is soft and slippery, and its hardness is less than one on the Mohs scale. Graphite also has a lower density (2.266 grams per cubic centimeter) than diamond.

Detailed explanation-3: -Graphite and Diamond are different because they have different structures. Both have Giant Covalent Structures, resulting in very high melting temperatures. However each carbon atom in Diamond has 4 covalent bonds with other Carbons, making it extremely strong and hard.

Detailed explanation-4: -Graphite is found in common pencil lead. Yet diamond and graphite are made of the same stuff: carbon atoms.

There is 1 question to complete.