1. Do Now List at Least 3 Charact-eristics List at Least 3
In what ways can the pH or acidity of water affect aquatic organisms (such as fish)?
Create and complete the Venn Diagram below:
Acid
Base
List at
Least 3
Charact-eristics
List at
Least 3
Charact-eristics
List at
Least 1
Charact-eristic

2. Do Now pH <7 Sour pH >7 Turns pH (litmus) paper red Not Neutral
Acid
Base
pH <7
Sour
Turns pH (litmus) paper red
pH >7
Bitter
Feels slipp-
ery
Not Neutral
Can be corrosive

3. Title 46: Title of Lesson Date:
Summary of Introduction:
Challenge:
Key Words: acid, base, neutral
Procedure: I understand, sign
Materials:
Data:
Analysis: 1,3, 4
Notes to myself for tomorrow:

4. Title 48: Title of Lesson Date:
Summary of Introduction:
Challenge:
Key Words: acid, base, neutralization
Procedure: I understand, sign
Materials:
Data:
Analysis: 1,2,3, 4
Notes to myself for tomorrow:

5. Exit Ticket 1
What happened to hydrochloric acid when you diluted it with water ?
Remained Constant
Became more acidic
Became very basic
Became less acidic/more neutral

6. Exit Ticket 1 What molecule would you
Expect to find when you put a base in an aqueous solution (water)?
Hydronium (H3O+)
Hydroxide (OH-)
Ethanol
Methanol

7. Acids Often taste sour Strong acids can burn skin & eyes
Strong acids can dissolve metals
Examples:
Lemon juice
Vinegar
Car battery acid (dangerous!)

8. Bases Can taste bitter, sweetish, or salty
Strong bases can burn skin & eyes
Bases react more easily with protein than with metal; they are often used for cleaning
Examples:
Milk
Baking soda
Soap
Drain cleaner (dangerous!)

9. Some substances are not really an acid or a base: For example, pure water

10. Most Substances: Can be identified as either acidic or basic
Like the soil in our backyard.

11. A special name is given to the acid or base characteristic that a substance has:
It is called: pH
“p” stands for potential and “H” stands for hydrogen; hence, the potential of a substance to attract hydrogen ions pH

12. How Does It Work?
The paper is treated with chemicals that change color to show the pH.
When the paper touches the substance being tested, it turns a specific color to tell if the substance is an acid or a base.

13. The pH Scale pH scale ranges from 0 -14
pH 7 is neutral; neither acid nor base
Pure water is pH 7
Low pH (0-6.9) = acid
High pH (7.1-14) = base
The closer to the ends of the scale, the stronger the solution is

14. 0--------------7---------------14
Acid
Any substance which has a pH of value of less than 7 is considered an acid
Acid Neutral Base

15. 0--------------7---------------14
Base
Any substance which has pH value greater than 7 is a base
Acid Neutral Base

16. pH 7 A pH of 7 is called neutral—neither acid nor base.
Acid Neutral Base

17. Acidic or Basic
If the number is less than 7 the substance or water is acidic
If the number is more than 7 the substance or water is basic

18. The pH Scale

19. Why is pH important? Fish can’t live if the pH is too high or too low
Soil has to be in a certain pH range for plants to grow and stay healthy.