1. November 13, 2013 Once you’re in, you’re in
November 13, 2013 Once you’re in, you’re in. When the bell rings, electronics and headphones away working on the Do Now (half sheet you picked up). You have until 5 minutes after the bell until this is collected. TURN IN SOLUTIONS ANTICIPATION GUIDE (ONLY THE GUIDE NOT THE READING). TURN IN ANY LATE STEM PROJECT ASSIGNMENTS AND ANY LATE HW.

2. Tutoring
Thursday afterschool in 710 (2:30-3:30pm) – will not be available
Wednesday Lunch A

3. Homework
Vocabulary column #1 **
Assignment #10
**graded

4. Objective
SWBAT Summarize properties of solutions

5. Video
Expectation : Take bullet point notes, what you think is the most important (8-10 bullet points) Be prepared to share

6. Solids, Liquids, Gas mini-poster – 15 minutes
SIX groups
Intermolecular forces (define and explain their role)
Description of phase (volume, shape, state it is found)
Draw a picture indicating how particles are packed for the state you are researching
List difference types and give an example

7. Classification of Matter
Solutions are homogeneous mixtures

8. Solute Solvent A solute is the dissolved substance in a solution.
Salt in salt water
Sugar in soda drinks
Carbon dioxide in soda drinks
Solvent
A solvent is the dissolving medium in a solution.
Water in salt water
Water in soda

9. “Like Dissolves Like”
Nonpolar solutes dissolve best in nonpolar solvents
Fats
Benzene
Steroids
Hexane
Waxes
Toluene
Polar and ionic solutes dissolve best in polar solvents
Inorganic Salts
Water
Sugars
Small alcohols
Acetic acid

10. Solubility Trends
The solubility of MOST solids increases with temperature.
The rate at which solids dissolve increases with increasing surface area of the solid.
The solubility of gases decreases with increases in temperature.
The solubility of gases increases with the pressure above the solution.

11. Therefore… Solids tend to dissolve best when: Heated Stirred
Ground into small particles
Gases tend to dissolve best when:
The solution is cold
Pressure is high

12. Solubility Chart

13. Definition of Electrolytes and Nonelectrolytes
An electrolyte is:
A substance whose aqueous solution conducts an electric current.
A nonelectrolyte is:
A substance whose aqueous solution does not conduct an electric current.

14. Electrolytes vs. Nonelectrolytes
The ammeter measures the flow of electrons (current)
through the circuit.
If the ammeter measures a current, and the bulb
glows, then the solution conducts.
If the ammeter fails to measure a current, and the
bulb does not glow, the solution is non-conducting.

15. Try to classify the following substances as electrolytes or nonelectrolytes…
Pure water
Tap water
Sugar solution
Sodium chloride solution
Hydrochloric acid solution
Lactic acid solution
Ethyl alcohol solution
Pure sodium chloride

16. Answers to Electrolytes
NONELECTROLYTES:
Tap water (weak)
NaCl solution
HCl solution
Lactate solution (weak)
Pure water
Sugar solution
Ethanol solution
Pure NaCl

17. Foldable
Lavender paper
Solution = Solute + Solvent

18. Solution = Solute + Solvent
Solute - gets dissolved
Solvent - does the dissolving
Aqueous (water)
Tincture (alcohol)
Amalgam (mercury)
Organic
Polar
Non-polar
Solutions are always homogeneous – evenly mixed.
Solutions
– In all solutions, whether gaseous, liquid, or solid, the substance present in the greatest amount is the solvent, and the substance or substances present in lesser amounts are the solute(s).
– Solute does not have to be in the same physical state as the solvent but the physical state of the solvent determines the state of the solution.
– If solute and solvent combine to give a homogeneous solution, solute is said to be soluble in the solvent.
The difference between hydrophilic and hydrophobic substances has substantial consequences in biological systems.
– Vitamins can be classified as either fat soluble or water soluble.
1. Fat-soluble vitamins (Vitamin A) are nonpolar, hydrophobic molecules and tend to be absorbed into fatty tissues and stored there.
2. Water-soluble vitamins (Vitamin C) are polar, hydrophilic molecules that circulate in the blood and intracellular fluids and are excreted from the body and must be replenished in the daily diet.
Nightmare on White Street
Chem Matters, December 1996

19. Head start on Vocab or work on Stem Project