1. Question of the Day Was the Wicked Witch a good chemistry student?
Did she correctly and scientifically describe her demise?
Day 1

2. Objectige / Essential Question
How can we predict the solubility of a salt based on its ions?

3. Electrolytes and Nonelectrolytes
Your cells use electrolytes, such as sodium and potassium ions, to carry electrical impulses across themselves and to other cells.
An electrolyte imbalance can occur if you become dehydrated.
When you exercise, you can lose water and electrolytes from your body through perspiration.

4. V. What are metathesis reactions?
A. Metathesis reactions can also be called
_______ ______________ reactions.
B. The mixing of 2 solutions will result in
a chemical reaction if _____ are _________
from the solution.
double replacement
ions
removed

5. Metathesis (Exchange) Reactions
Metathesis comes from a Greek word that means “to transpose.”
AgNO3 (aq) + KCl (aq)  AgCl (s) + KNO3 (aq)

6. Metathesis (Exchange) Reactions
Metathesis comes from a Greek word that means “to transpose.”
It appears the ions in the reactant compounds exchange, or transpose, ions.
AgNO3 (aq) + KCl (aq)  AgCl (s) + KNO3 (aq)

7. Solution Chemistry
It is helpful to pay attention to exactly what species are present in a reaction mixture (i.e., solid, liquid, gas, aqueous solution).
If we are to understand reactivity, we must be aware of just what is changing during the course of a reaction.

8. V. What are metathesis reactions?
Ions can be removed from solution by any of 3 processes:
1. The formation of an __________
solid, known as a _____________
2. The formation of either a weak
____________ or a ________________
3. The formation of a ____ that bubbles out of the solution
insoluble
precipitate
electrolyte
nonelectrolyte
gas

9. Precipitation Reactions
When one mixes ions that form compounds that are insoluble (as could be predicted by the solubility guidelines), a precipitate is formed.

10. V. What are metathesis reactions?
C. Examples
Write the molecular, complete, and net ionic equations for these reactions that occur in water.
1. Magnesium nitrate and sodium hydroxide

11. V. What are metathesis reactions?
C. Examples
Write the molecular, complete, and net ionic equations for these reactions that occur in water.
2. Magnesium hydroxide and hydrochloric acid

12. Test = Monday 3-3

13. Postlabs due Wednesday 2-26.
Due Dates period 1
Postlabs due Wednesday 2-26.
Lab Reports and Presentations due Monday 3-3.
Day

14. Postlabs due Thursday 2-27.
Due Dates period 3
Postlabs due Thursday 2-27.
Lab Reports and Presentations due Monday 3-3.
Day

15. Question of the Day Day 4 2-26
What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl?
Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.
Day 15

16. Test = Tuesday 3-4

17. Objectige / Essential Question
How can we predict the solubility of a salt based on its ions?

18. V. What are metathesis reactions?
C. Examples
Write the molecular, complete, and net ionic equations for these reactions that occur in water.
3. Chromium(II) acetate and nitric acid

19. V. What are metathesis reactions?
C. Examples
Write the molecular, complete, and net ionic equations for these reactions that occur in water.
4. Barium nitrate and sulfuric acid

20. Assignments
Solubility Rules Handout 20

21. Solubility Rules

22. Test = Friday 2-8 for Period 3
Thursday 2-7 for Period 1

23. Presentations

24. Double Pd 1 2-1 Prepare 150 ml of 0.1M solutions of: BaCl2 CaCl2 SrCl2
LiCl 24

25. Test = Thursday 2-7 for both periods

26. Assignments
Solubility Rules Handout 26

27. Solution Formation
What factors affect how fast a substance dissolves?

28. Solution Formation
Which dissolves faster sugar cubes or granulated sugar?
Why the stirring?
Sugar dissolves faster in hot / iced tea?

29. Solution Formation Like Dissolves Like
The compositions of the solvent and the solute determine whether or not a substance will dissolve.
Like Dissolves Like
Factors that affect how fast a substance dissolves include:
Agitation
Temperature
Particle size of the solute

30. Solution Formation Agitation
Agitation (stirring or shaking) affects only the rate at which a solid solute dissolves.
It does not influence the amount of solute that will dissolve.
Agitation increases the rate of dissolving

31. Solution Formation Temperature
Higher temperatures lead to an increased rate of dissolving.
At higher temperatures, the kinetic energy of molecules is greater than at lower temperatures, so the molecules move (and mix) faster.

32. Solution Formation Particle Size of the Solute
Smaller particles expose a greater surface area and so increase rate of dissolving.
The more surface area of the solute that is exposed, the faster the rate of dissolving.

33. Which of the following will not speed up the rate at which a solid solute dissolves?
A. Increasing the temperature
B. Stirring the mixture
C. Crushing the solute
D. Decreasing the temperature

34. Quick Draw Molarity Net ionic equation Solute Dissociating
Diprotic acids
Spectator ions
VcMc=VdMd
electrolyte
Strong acids
mols/L
salts
Weak base

35. QUICK TALK NH3 Disperse Strong base Hydrogen bonding Solute
Molecular equation
Molarity
Weak acid
Solvent
Tincture
VcMc = VdMd
Monoprotic

36. 36