What common object contains carbon and is described as having the property that it can bond to itself?

What common object contains carbon and is described as having the property that it can bond to itself?

• A. Charcoal; can bond to itself
• B. Water; can bond to itself
• C. Salt; conducts electricity
• D. Glass; rigid

Answer: (A)

Carbon can form strong covalent bonds with other carbon atoms, creating long chains and complex networks. This self-bonding aspect—carbon bonding to itself—defines many carbon-based materials. Charcoal is rich in carbon and is essentially a network of carbon atoms bonded to each other, making it a clear example of carbon bonding to itself. The other options don’t showcase carbon–carbon bonds: water bonds H to O, salt is an ionic compound of ions, and glass is primarily a silicon–oxygen network with no carbon involved.

Carbon can form strong covalent bonds with other carbon atoms, creating long chains and complex networks. This self-bonding aspect—carbon bonding to itself—defines many carbon-based materials. Charcoal is rich in carbon and is essentially a network of carbon atoms bonded to each other, making it a clear example of carbon bonding to itself. The other options don’t showcase carbon–carbon bonds: water bonds H to O, salt is an ionic compound of ions, and glass is primarily a silicon–oxygen network with no carbon involved.