Asked by lanan
A substance has a melting point of 8040C, is insoluble in water and is a good insulator of electricity. The substance is most likely
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A covalent (giant) network solid.
Reason: a very high melting point implies strong bonds throughout the lattice; insolubility in water and poor electrical conductivity fit network covalent solids (electrons are localized in bonds). Ionic solids would usually be water‑soluble (and conduct when molten or in solution) and metals conduct electricity. Examples: diamond, SiO2, SiC.
Reason: a very high melting point implies strong bonds throughout the lattice; insolubility in water and poor electrical conductivity fit network covalent solids (electrons are localized in bonds). Ionic solids would usually be water‑soluble (and conduct when molten or in solution) and metals conduct electricity. Examples: diamond, SiO2, SiC.
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