1. September 30, 2012 The pH scale measures how acidic or basic a substance is. The scale ranges from 0 (most acidic) to 14.0 (most basic). A pH of 7.0 is neutral. A pH less than 7.0 is acidic, and a pH greater than 7.0 is basic. Pure water is neutral, with a pH of 7.0. Vinegar and lemon juice are acidic substances, while soap (lye) and ammonia are basic. Table 1.12 summarizes pH levels for a variety of common substances. According to Table 1.12, the pH of ammonia is A.3.0 B.4.5 C.8.3 D.11.0 Table 1.12 Base SubstancepH Lye13.0 Lime12.4 Ammonia11.0 Milk of Magnesia10.5 Baking Soda8.3 Human Blood7.4 NeutralPure Water7.0 Acid Milk6.6 Tomatoes4.5 Malt Beverages4.0 Apples3.0 Vinegar2.2 Lemon Juice2.0

2. Throwback Question Write a hypothesis for the following problem. How many marshmallows can I fit in my mouth during the game ‘Chubby Bunny’? What is important to remember when writing a hypothesis?!?

3. October 1, 2012 The pH scale measures how acidic or basic a substance is. The scale ranges from 0 (most acidic) to 14.0 (most basic). A pH of 7.0 is neutral. A pH less than 7.0 is acidic, and a pH greater than 7.0 is basic. Pure water is neutral, with a pH of 7.0. Vinegar and lemon juice are acidic substances, while soap (lye) and ammonia are basic. Table 1.12 summarizes pH levels for a variety of common substances. According to Table 1.12, the pH of vinegar is: A.2.0 B.2.2 C.8.3 D.12.4 Table 1.12 Base SubstancepH Lye13.0 Lime12.4 Ammonia11.0 Milk of Magnesia10.5 Baking Soda8.3 Human Blood7.4 NeutralPure Water7.0 Acid Milk6.6 Tomatoes4.5 Malt Beverages4.0 Apples3.0 Vinegar2.2 Lemon Juice2.0

4. Throwback Question Identify the independent & dependent variable from the following scenario. An investigation was done to see if the temperature would affect the color change in leaves during the fall. Independent Variable __________________ Dependent Variable __________________

5. October 2, 2012 The pH scale measures how acidic or basic a substance is. The scale ranges from 0 (most acidic) to 14.0 (most basic). A pH of 7.0 is neutral. A pH less than 7.0 is acidic, and a pH greater than 7.0 is basic. Pure water is neutral, with a pH of 7.0. Vinegar and lemon juice are acidic substances, while soap (lye) and ammonia are basic. Table 1.12 summarizes pH levels for a variety of common substances. According to Table 1.12, which of the following substances is the most acidic? A.Lye B.Pure Water C.Milk D.Lemon Juice Table 1.12 Base SubstancepH Lye13.0 Lime12.4 Ammonia11.0 Milk of Magnesia10.5 Baking Soda8.3 Human Blood7.4 NeutralPure Water7.0 Acid Milk6.6 Tomatoes4.5 Malt Beverages4.0 Apples3.0 Vinegar2.2 Lemon Juice2.0

6. Throwback Question Which of the following inferences is correct? a. More men had stuff to talk about during 1996 than women. b. More women talked to other women during 2000. c. Both sexes talked more in the 90’s than in the 2000’s. d. Men were more talkative in 2000 than women.

7. October 3, 2012 The pH scale measures how acidic or basic a substance is. The scale ranges from 0 (most acidic) to 14.0 (most basic). A pH of 7.0 is neutral. A pH less than 7.0 is acidic, and a pH greater than 7.0 is basic. Pure water is neutral, with a pH of 7.0. Vinegar and lemon juice are acidic substances, while soap (lye) and ammonia are basic. Table 1.12 summarizes pH levels for a variety of common substances. According to Table 1.12, which of the following substances is the most basic? A.Lye B.Human Blood C.Pure Water D.Lemon Juice Table 1.12 Base SubstancepH Lye13.0 Lime12.4 Ammonia11.0 Milk of Magnesia10.5 Baking Soda8.3 Human Blood7.4 NeutralPure Water7.0 Acid Milk6.6 Tomatoes4.5 Malt Beverages4.0 Apples3.0 Vinegar2.2 Lemon Juice2.0

8. Throwback Question Use the picture to the right. Find the density of a hammer with a mass of 28g.

9. October 4, 2012 The pH scale measures how acidic or basic a substance is. The scale ranges from 0 (most acidic) to 14.0 (most basic). A pH of 7.0 is neutral. A pH less than 7.0 is acidic, and a pH greater than 7.0 is basic. Pure water is neutral, with a pH of 7.0. Vinegar and lemon juice are acidic substances, while soap (lye) and ammonia are basic. Table 1.12 summarizes pH levels for a variety of common substances. According to Table 1.12, which of the following substances is the most basic? A.Milk B.Tomatoes C.Baking Soda D.Apples Table 1.12 Base SubstancepH Lye13.0 Lime12.4 Ammonia11.0 Milk of Magnesia10.5 Baking Soda8.3 Human Blood7.4 NeutralPure Water7.0 Acid Milk6.6 Tomatoes4.5 Malt Beverages4.0 Apples3.0 Vinegar2.2 Lemon Juice2.0

10. Throwback Question Metric Conversions Convert 45 L  _____ mL ** Hint: Write out your Metric System! **