Unit Test — Unit test Answers

The graph below shows how solubility changes with temperature.What is the solubility of Na2HAsO4 at 60°C?

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 graph below shows how solubility changes with temperature.Which two solutions have similar solubilities at 40°C?

Which substance is an example of a colloid?

Solute crystals are added to a solution until they begin to sink to the bottom of their container. The solution is then heated, and many more solute crystals dissolve. Which term best describes the solution immediately after it was heated?