Lab: Solubility — Unit test Answers

Which pure substance can be classified as an element?

The picture below shows a mixture that was stirred 3 minutes ago.What should this mixture be classified as?

Which heterogeneous mixture contains large particles that can settle out or can be filtered?

A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one of her materials?

Which substance is a mixture?

Which statement describes an intensive property of matter?

What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the solute's solubility?

The table below shows four samples of carbon dioxide gas and the temperature of the water that they were dissolved in.SampleTemperature of water (°C)1 782 733 554 63Which of the samples most likely had the lowest solubility?

Which process is a chemical change?

Which physical method can be used for obtaining a sample of salt from a small beaker of salt water?

Which statements are true of heterogeneous mixtures? 1) They settle out. 2) The proportions of solute to solvent may vary. 3) The solute is evenly distributed throughout. 4) They are composed of two solvents and two solutes.

Which factor causes a decrease in the rate of dissolution?

Which is true about the dissolving process in water?

Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. Which statement best describes these three components of air?

What type of mixture scatters light and cannot be filtered easily?

Which list includes only physical properties?

The table shows the percentages of hydrocarbons that are found in a sample of crude oil.HydrocarbonsPercentageparaffins30naphthenes49aromatics15asphaltics6.0Based on the given information, what is the best classification for this sample of crude oil?

Under which conditions will sugar most likely dissolve fastest in a cup of water?

Mixture A was made by mixing different components together, but it appears to have one phase. Which term best categorizes mixture A?

Under which conditions would the solubility of a gas be greatest?