Transcript ACIDIC or BASIC?

Texas A&M
E3 Summer Research
Program
Welcome to the City of
Brumbellville: The Virtual City
That Becomes A Reality
Karina Monteal & Gregory
Washington
June 28, 2007
Topics…
The question
General lesson plans &
Objectives
The Initial Virtual Model
Brumbellville’s Layout
The Lesson(s)
Conclusions
Acknowledgements
THE QUESTION IS:
After someone tampered
with the city water reservoir
is the water safe to drink?
ACIDIC or
BASIC?
General Objectives:

To discuss various solvents, their
salvation power. Solvent, solute,
solubility relation.

To discuss pH in terms where the
pH= –log (H+)
Specific Objectives:
 IPC.08.B, C, E: Understand chemical reaction. Balance
chemical reaction.
 IPC.09.A, D, E: Understand Physical and chemical properties
of solvent and solution.
 IPC.09.A: Understand ionic concentration in solution. Make a
Venn diagram of acid, base and salt. Vocabulary words and their
definitions. Discuss acids, base and their uses. Discuss common
bases.
 Hands on activity- how to distinguish acid and base (litmas
reaction). Dissociation of acid /base solution, concept of
hyronium (H3O+) and hydroxyl (OH-) ion. Why H+ ion cannot
exist in solution?
Students will be able to discuss strong acid and strong base.
Hands on activity of electric conductance of strong acid and base
solution. Introduce concept of pH , pOH, Kw of water. Discuss
natural pH indicator.
Micropolis: A small virtual city
• GIS Framework
1000 ft
WTP
Tank
Roads
BRUMBELLVILLE LAYOUT OF
THE CITY COMING TO LIFE
THE ACTUAL MODEL OF
BRUMBELLVILLE
• Liquid solutions would
be either and an acid or
base.
• Exception would be the
solvent distilled water.
• Distilled water is just
water.
• Ions in solution make
something acidic or
basic.
• In your body
there are small
compounds
called “amino
acids”. Those
are acids.
• “citric acid”
A: When you
dissolve it in
water, a
solution of
baking soda
will be a base.
NaHCO3
• A: Vinegar,
it’s an acid
• Water has a pH of 7,
right at the middle,
and it is neutral.
• Acids are found
between 0 to 7.
• Bases are between 7
to 14.
• Most of the liquids
you find every day
have a ph near 7.
• Taste sour.
• Corrode metals and
other substances
• Burn your skin if
strongly concentrated
• All acids no matter how
dilute, can damage your
eyes and other areas of
your body.
Household Acids
• Taste bitter
• Slippery
• Can be very
dangerous if
ingested or in
contact with the
skin
Household Bases
Do you want to know how
acidic or basic the substances
you commonly drink or deal
with are? Well, why not try
the activity we have here?
Are you Ready?
Put your…
Goggles,
Gloves,
Apron,
And let’s start!!!
Introduction:
•You can determine if a substance is an acid or base
by using an indicator.
•An indicator will change colors when combined with
an acid or a base.
•The color of the substance determines the pH.
Materials:
beakers
lemon juice
milk
coffee
soda
pH paper
vinegar
creamer
ammonia
liquid cleaner
antacid
bleach
Procedure:
1. Obtain a beaker of each of the solutions and
dip a one-inch piece of pH paper into one of
the solutions.
2. Compare the color of the ph paper to the pH
indicator.
3. Repeat steps 1 and 2 to each of all the other
solutions.
4. Complete the Data table.
Data Table:
Name of substance`
Lemon juice
Milk
Coffee
Soda
Vinegar
Creamer
Ammonia
Antacid
Liquid cleaner
bleach
pH
Acidic or
Basic
If vinegar is
entered into the
city, can the water
still be consumed
by humans?
ACKNOWLEDGEMENTS
THE MAN OF THE HOUR: DR. KELLY
BRUMBELOW
DR. BUTLER-PURRY
Ph.D. CANDIDATE: JULIANNA CAMACHO
Ph.D. CANDIDATE: JACOB TORRES
THE BEST PARTNER IN THE PROGRAM:
KARINA MONTEAL
OH AND YOU KNOW I CANNOT FORGET
YOU ALL: THE E3 CLASS OF 2007!!!