3. melt water as the group is classified as a 3. -The substance that is soluble, such as curry salt (NaCl) potassium permanganate (KMnO4), alkaline, etc. -Soluble substances, such as chlorine gas (Cl2) does, carbon dioxide (CO2), etc. -The substance is not soluble in water, such as sulfur (S8), iron (Fe), etc.
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