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OpenStudy (anonymous):

Which is an example of an ionic compound? Copper (II) sulfate forms blue crystals, and the crystals are hard but brittle. Carbon dioxide is a gas at room temperature and is formed from carbon and oxygen atoms. Copper has a metallic color and can be hammered into different shapes. A B or C?

eclipsedstar (eclipsedstar):

Can you please stop posting Chemistry questions on the English section? It is spam if the user continuously does so while knowing that it is not allowed.

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