3 substance appearance boiling point density water

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3. Substance Appearance Boiling Point Density Water Clear, colorless liquid White, crystalline solid Mixture of water Clear, colorless liquid The table above summarizes data given to a student to evaluate the type of change that took place when substance was mixed with water. The student claimed that the data did not provide enough evidence to determine whether a chemical or physical change took place and that additional tests were needed. Which of the following identifies the best way to gather evidence to support the type of change that occurred when water and were mixed? A Measuring the melting point of the mixture of water and Adding another substance to the mixture of water and to see whether a solid forms Measuring and comparing the masses of the water, , and the mixture of water and Measuring the electrical conductivities of and the mixture of water and B C D
4. Which of the following describes the changes in forces of attraction that occur as H 2 O changes phase from a liquid to a vapor? B C D E

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