Why does diamond have a higher melting point than silicon?

The bond energy of Si is generally considered to be lower than that of the C-C, so a simple explanation is that diamond has a stronger bond. It has a high melting point and boiling point as much energy is needed to break the many strong covalent bonds.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

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