We covered Ben's lesson of answering questions to ask yourself pg. 43-44. ed

Ben completed questions 3,4, and 5, on page 42 and attempted problem 15. However, he stated that he had already completed the work.

Assignment-
Watched video-

Ben was tasked to completed Chapter 4: Covalent Compound Naming and Formula Writing - reading and completing guided practice problems 1 and 2. Ben did not complete the assignment.

Diagram why the addition of a solute will cause the freezing temperature to decrease. Show how the solute interferes with the hydrogen bonding between molecules in the solvent. Analyze why an ionic compound will lower the freezing temperature more than an equal amount of covalent comppoumd. Discuss vapor pressure and boiling.

Define colligative properties. List examples as being the melting point, boiling point, freezing point, and vapor pressure. Write the chemical dissociation of a common salt and discuss the terms electrolyte and ion. Indicate using examples how the freezing point of water lowers the same amount regardless of the solute, it only depends on the number of ions formed by dissociation

In the lab prepare a supersaturated solution of sodium acetate. Follow exact measuring and heating procedures. Allow the solution to cool for 50 minutes between lab periods. Once cooled, produce a "hill" of sodium acetate by slowly pouring the solution over a small seed of sodium acetate in a watch glass. Carefully examine the growth of the crystal as it is poured. View a video prior to the pouring which demonstrates what will happen. Compare your results to the video

Outline saturated solutions, unsaturated solutions, and supersaturated solutions. Discuss these in terms of dynamic equilibrium. Introduce vapor pressure and atmospheric pressure Discuss how vapor pressure forms above the surface of all liquids and exerts a downward pressure on the liquid. Discuss why less gas will dissolve in a warmer liquid than in a colder one.

View the the differences between a saturated, unsaturated, and super saturated solution. Show how the solution concentration will depend on the temperature of a given amount of solvent. Examine the use of a solubility chart to determine the maximum amount of solute at a given temperature. Show how to make a supersaturated solution, and the result of adding 1 grain more of solute to the solution.

Factors which affect the rate of solvation reaction lab. The affect of solute surface area on the rate of solution and the affect temperature has on the rate of solution.