1. Solution Unit TEST Friday March the 21 st

2. WOD and Video Quizzes

3. Introduction Video Take Notes Quiz to Follow

4. 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?

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

6. SolutionSuspen- sion Vs. Colloid Solute Solvent Label each flap with the following:

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

8. Types of solutions…. Gas in gasoxygen in nitrogen Gas in liquidCO2 in water Liquid in liquidalcohol in cola Liquid in solidmercury in silver Solid in liquidsugar in Kool aid Solid in solidgold in nickel

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

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

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

12. Identify the solute and solvent

13. GAS BUBBLES

14. Universal Solvent = Water = aqueous

15. 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

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

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

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

19. 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

21. 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?

22. Examine the solubility curve and decide if the following solutions would be saturated, unsaturated or supersaturated? 1. 200 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?

23. Now Complete the Graphing Assignment. Make the graph – LINE GRAPH, with a key (3 lines). Extra graph paper provided if you mess up first graph – BUT, keep original for the data and questions portion. Answer the question in complete sentences – extra paper provided if needed. Staple all sheets together and turn in.

24. Names for Compounds 1. a)Salt = NaCl b)You pick answer c)You pick answer d)NH4Cl = Ammonium Chloride e)KNO3 = Potassium Nitrate f)KI = Potassium Iodide g) Match the compound with the symbol.

25. Acids, Bases, and Salts The strength of an Acid or Base Depends on the degree in which a 1. acid 2. Hydrogen ions 3. Positive 6. Salt 4. Base 5. Negative Hydroxide atoms produce In solution which are produce In solution which are and combine to form Get out your GRAY STUDENT LEARNING MAP and complete this!

26. 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?

27. 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.

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

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

30. Examples of Acids HCl - Hydrochloric acid H 3 BO 3 - Boric Acid H 2 SO 4 - Sulfuric Acid Acetic acid - vinegar Citric acid - lemons, limes

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

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

33. Examples of Bases NaOH - sodium hydroxide Ca(OH) 2 - calcium hydroxide NH 3 OH - ammonium hydroxide Soaps (lye), shampoos, “Drain-O”

34. Physical Science Name __________________________ Date _________ Period __________

35. Battery Acid Sod a Tomato Juice Lemona de Black Coffee Baking Soda Bleach Pure Water Soapy Water Drain Cleaner

37. Brain Pop on pH scale http://www.brainpop.com/science/matteran dchemistry/phscale/http://www.brainpop.com/science/matteran dchemistry/phscale/

38. pH Scale - measures [H+]

39. Indicators - chemicals that change color in solns of different pH Phenolphthalein – chemical that turns bright pink in bases but no change in acids

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

41. 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.

42. Unit 8: Solutions Test Format 25 multiple choice Test Review Sheet will be posted on Ms. Weis webpage on MCA site. Check your answers.

43. Lab TIME – copy this onto white paper! Vine- gar Coke NaOH ABCABC Lemon Juice Milk Lysol HCl Distilled Water 1 2 3 4 5

45. 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 + H 2 O Titration: add acid/base drop by drop until end point is reached

46. http://tinyurl.com/72topdc

47. 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. 6.7 pH Milk 2.5 pH Sports Drinks 6 pH Beauty Products