Giant ionic compunds: have a high melting point, have many strong ionic bonds, take a lot of energy to melt, are for compounds of a metal and non-metal, its structure is made up of alternating cations and anions in a giant 3D arrangement called a lattice, are solids at room temperature, dissolve in water, conduct electricity only when molten or dissolved in water, Simple covalent substances: have a low melting point, have weak forces between the molecules, take little energy to melt, are liquids or gases at room temperature, can not conduct electricity, some can dissolve in water, structure consists of molecules held together with weak forces, bonding is covalent, involve only non-metals,

Simple covalent or giant ionic?

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