This document provides information about acids and bases including: 1) The pH scale measures hydronium (H3O+) ions in a solution and ranges from 0-14, with acids from 0-6.9 and bases from 7.1-14. 2) Bromothymol blue turns green in the presence of an acid and blue in the presence of a base. 3) Living things depend on a steady pH in their environment, and acid rain can damage trees, lettuce, and cars.

1. You will Need:
Acids & Bases Part 1 – Pages
1-4
r Pencil, Colored Pencils
P Balancing Equations #2 – Did you
do your R&R on the back page –
Was due yesterday

2. A positively or negatively charged
ION: particle
pH Measures the # of H+ ions in a
Scale: solution (Potential Hydrogen Ions)
ACID 7
BASE
0-6.9 NEUTRAL 7.1-14

3. • Shade the
center area of
your data table
with the
appropriate
color.

4. Which ION is the pH scale measuring?
What is the number that represents the
strongest base on the pH scale?
n In an alkaline solution, what type of
IONS are present?
? What colors are associated with acids?
a What number on the pH scale indicates
the strongest acid?
i What type of substance has very few
hydronium ions?

5. What is the number range for acids on
the pH scale?
e What colors are associated with
bases?
a What type of substance (acid or base)
is slippery?
s What type of substance (acid or base)
turns bromothymol blue, green?
s If a substance registers a 4 on the pH
scale, is it neutral, acid or base?
t A reading greater than 7 indicates
your solution is ___________?

6. Protium, Dueterium and Tritium are all
isotopes of Hydrogen, Why?
o What kind of bond does HCl form?
d Hydrogen Peroxide (H2O2) forms what
kind of bond? How do you know?

7. Protium, Dueterium and Tritium are all
isotopes of Hydrogen, Why?
o What kind of bond does HCl form?
d Hydrogen Peroxide (H2O2) forms what
kind of bond? How do you know?
w The repeating pattern of NaCl form a
crystal ____________?
+ - + - + - + - +
- + - + - + - + -
_ What is the most common isotope for
Silicon?

8. • Timer Designers – Log – on to
Learning Point and open up –
ACID and BASE Virtual Lab
• Turn to #6 Interactive Computer
Activity
Bromothymol Blue in
the presence of ACID,
NEUTRAL and BASE

9. Visit the
• One of the pH Explore the pH Factor
paper colors is option on the class
wrong.
website:
• Which one?
• Why?
• Highlight the
wrong row with
a colored pencil.
http://www.miamisci.org/ph/

10. • , 8. & 9. Living things depend on a
steady pH in their environment. (Pg 294)
• Hyperlink: “pH for trees” – Find the
WHITE PINE
• Hyperlink: “Lettuce”
• Hyperlink: “What is Acid Rain?”
• Hyperlink: “ Acid Rain on My Car!”

11. Pg. 3 of Lab Sheets
• Answer Questions 1-5
Venn Diagram
• Minimum of 3 bullets for each
section….do not need to be in
complete sentences.
Graphic Organizer
1. Use word bank – First word is pH

12. Base
Acid
•
• • •
• • •
• Both •

13. Word Bank:
base, pH, salt,
acid, neutral
pH

14. • Binder Check #3 Due
Tomorrowat the beginning of
class
• STUDY for your Test #3–
Target Concepts on-line – ½
sheet of notes, front side only,
done by hand