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The reactant CuSO₄ is an ionic compound.
Ionic compounds are formed by substances with a significative difference in their electronegativity. CuSO₄ is formed by two ions: Cu⁺² and SO₄⁻². These ions are attracted together by electrostatic forces and the compound formed is a crystalline solid, with a high melting point, fragile and easily dissolved in water.
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