CHEM 139: General Chemistry Prep Active Learning Questions Chapter 3: 4. Chapter 10: 3. A white powder (consistent melting point of 635oC) is dissolved in water, resulting in a clear liquid. A blue liquid (unmarked bottle, left on the lab bench by last quarter’s class) is added, forming lots of heat, a yellow solid (with a consistent melting point of 880oC) and a colorless gas. Both liquids and both solids may be broken down into something simpler by chemical means; the gas cannot. Classify each of the following as a compound, element, or mixture--or state "not enough information to determine". white powder clear liquid blue liquid yellow solid colorless gas If “not enough information to determine,” what additional information do you need? Is this a chemical change or a physical change? Is this change endothermic or exothermic?