1. Solution Unit

3. Activator – answer in your notebooks.
The solution to your lunchtime hunger may be a mixture. There are different kinds of mixtures – some are the same throughout, while others are mixed unevenly. This picture shows a few of both kinds of mixtures.
Which items in this picture are the same throughout? Which are unevenly mixed?
Do you think the salad is the same kind of mixture as the grape juice? Why or why not?

4. SPS6: Students will investigate the properties of solutions.
Describe solutions in terms of solute and solvent.
EQ: How do different solutes with in solvents affect the behavior of a solution.

5. Solute Solution Suspen- sion Vs. Colloid Solvent
Label each flap with the following:
Solution
Suspen-
sion
Vs.
Colloid
Solute
Solvent

6. A solution is a homogenous mixture in a single phase.
salt water, air
steel, & tea

7. Types of solutions…. Gas in gas oxygen in nitrogen
Gas in liquid CO2 in water
Liquid in liquid alcohol in cola
Liquid in solid mercury in silver
Solid in liquid sugar in Kool aid
Solid in solid gold in nickel

8. Look alikes….
Suspension: a mixture that looks homogeneous but settles over time.
muddy water, blood & oil and vinegar

9. Colloids: mixtures with very small particles that permanently float.
Look Alikes….
Colloids: mixtures with very small particles that permanently float.
Example: milk, shaving cream, jello, clouds, smoke

10. Solute- substance that is dissolved
Parts of a Solution…
Solute- substance that is dissolved
Solvent- substance that does the dissolving.

11. Identify the solute and solvent

12. Universal Solvent = Water = aqueous

13. Types of solutes
Electrolyte – solute that allows solution to conduct electricity
NaCl in aqueous solution
Non-electrolyte – solute does not allow solution to conduct electricity
Sugar in aqueous solution

14. Factors Affecting Dissolving
Size of solute particles
Temperature of solvent
Agitation of solution
Solubility of solute

15. Solubility – the amt of solute that can dissolve in a solvent (100 mL of water)

16. Super-saturated Solution : Above the line
To much solute,
No more of the solute will be dissolved. X
Saturated Solution:
On the line
Perfect ration of solute to solvent. X
Un-saturated Solution:
Under the line
Not enough solute, if more solute is added it can still be dissolved. X

17. Have out work sheet from yesterday.
Make sure the last 4 questions are complete.
Keep in mind:
Super = above the line
Saturated = on the line
Under = under the line

18. Practice Problem 1. Which compound is the most soluble at 40 degrees?
2. Which solute’s solubility changes
the least as temperature increases?
3. How many grams of
potassium bromide will dissolve in 100 g of water at 70 degrees?

19. 3. 55 g of potassium bromide at 100 degrees
Examine the solubility curve and decide if the following solutions would be saturated, unsaturated or supersaturated?
g of NaClO3 at 20 degrees
2. 40 g of salt at 60 degrees
3. 55 g of potassium bromide at 100 degrees
4.At what temperature would a solution of 100 g of KNO3 in 100 g of water be considered unsaturated?

20. Depends on the degree in which a
Acids, Bases, and Salts
The strength of an
Depends on the degree in which a
produce
produce
In solution which are
In solution which are
and combine to form

21. Depends on the degree in which a
Acids, Bases, and Salts
The strength of an
Acid or Base
Depends on the degree in which a
acid
Base
produce
produce
Hydroxide
atoms
Hydrogen ions
In solution which are
In solution which are
5. Negative
Positive
and combine to form
Salt

22. SPS6:
D. Compare and contrast the components and properties of acids and bases.
E. Determine whether common household substances are acidic or basic.
EQ: How are acids and bases different; what are some common household examples?

23. LIST ANY 5 FOOD/DRINKS that you think are acidic.
Activator
Many foods contain acids. For example, vinegar is a solution of acetic acid that has been used for centuries to preserve food. Some foods are more acidic, while others are less. Many acids have a sour taste.
LIST ANY 5 FOOD/DRINKS that you think are acidic.

24. Acids – substances that causes an increase in H+ ions in an aqueous solution Release

25. Characteristics of Acids
liquids
sour taste
solutions conduct electricity
react with metals

26. Examples of Acids H3BO3 - Boric Acid H2SO4 - Sulfuric Acid
HCl Hydrochloric acid
H3BO Boric Acid
H2SO Sulfuric Acid
Acetic acid vinegar
Citric acid lemons, limes

27. Bases (alkaline) – substances that cause a decrease in H+ ions in an aqueous solution Absorbing

28. Characteristics of Bases
solids
bitter taste
solutions feel slippery
do not conduct electricity
do not react with metals

29. Examples of Bases NaOH - sodium hydroxide Ca(OH)2 - calcium hydroxide
NH3OH ammonium hydroxide
Soaps (lye), shampoos, “Drain-O”

30. Physical Science Name __________________________ Date _________ Period __________

31. Soda Lemonade Tomato Juice Black Coffee Baking Soda Battery Acid
Drain Cleaner
Pure Water
Lemonade
Tomato Juice
Bleach
Soapy Water

33. Brain Pop on pH scale

34. pH Scale - measures [H+]

35. Indicators - chemicals that change color in solns of different pH

36. Which pH indicator is the most specific?
pH paper

37. Litmus Paper When you think Acid = Red Bases = Blue
So, when using the litmus paper use the opposite color.
You want the paper to turn the color you associate the solution with.

38. Lab TIME – copy this onto white paper! A B C
Vine-gar
Coke
NaOH
Lemon Juice
Milk
Lysol
HCl
Distilled Water

40. Neutralization Reactions
Neutralization reaction - mixture of acid and base in correct proportions .
Forms a neutral solution of water and a salt
Example: HCl + NaOH NaCl + H2O
Titration: add acid/base drop by drop until end point is reached

42. Pick (5) pictures that represent the topics of this unit.
6.7 pH Milk
2.5 pH Sports Drinks
6 pH Beauty Products
Make a poster.
Pick (5) pictures that represent the topics of this unit.
Label the pictures with a WORD or PHRASE as to why you picked it.