Answer :

Final answer:

Graphite's softness in pencils is due to the weak bonds between its layers, allowing easy sliding, making it suitable for writing instruments.


Explanation:

Graphite is soft and used for the 'lead' in pencils due to its structure with strong bonds within layers and weak bonds between layers. These weak bonds allow the layers to slide over each other easily, giving graphite its soft and lubricating characteristics. This makes it ideal for use in pencils.


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