Unit Test — Unit test Answers

Which method would be best for separating the components of a mixture that is made from two different liquids?

Which refers to a mixture that contains more than one phase in which the characteristics of the particles vary throughout the mixture?

Which is an example of a chemical change?

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures.The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.SampleNameChemical formulaTemperature of water (°C)1Table sugarC12H22O11 802Table sugarC12H22O11 453Table salt NaCl 554Table saltNaCl 63Which of the samples most likely had the highest solubility?

The table below shows the freezing points of four substances.SubstanceFreezing point (°C)benzene5.50water0.00butane–138nitrogen–210.The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these substances will solidify before the temperature reaches 0°C?