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Yttrium, a rare earth metal, has a silver-grey color and metallic luster. It also appears highly crystalline. Yttrium displays chemical properties similar to those of rare earth elements. It dissolves in both mineral acids and alkalis, which are chemical opposites of one another.
Highly soluble compounds, such as NaCl, break apart completely, while compounds with low solubilities, such as lead sulfate (PbSO 4) do so only partially. Compounds with nonpolar molecules do not dissolve. How Ionic Compounds Dissolve. In solution, each water molecule acts like a tiny magnet that creates a force of attraction on the ions in the solute.