Acids and Bases
A WebQuest for high school chemistry
The properties of acids and bases
Designed by Mr.H.Tse
| Intro | Task | Resources | Process | Evaluation | Conclusion |
Introduction
Acids and bases are everywhere. Look around you and every liquid you see
will probably be either an acid or a base. The only exception would be distilled
water. Distilled water is pure water. Pure water has a pH value of 7, which is neutral,
that means pure water is neither acidic nor basic. In everyone's body, there are small
compound called amino acids. In fruit, there is something called citrus acid. You can
tell both of them are acids. But what about baking soda? When it is dissolved in water,
it forms a base. Household ammonia cleaner is also a base. Can you name some acids
and bases ? Where are they located ?
Task
You are going to
- log on to the Web sites from the Resources.
- read the definitions of acids and bases.
- answer all questions in Homework #1 through Homework #5.
- summarize the properties of acids and bases.
- compare the Bronsted-Lowry definitions of acids and bases
with the Arrhenius definitions of acids and bases
-define pH value and titration.
Properties ACIDS BASES
1.
2.
3.
4.
5.
6.
Resources
Give examples of acids and bases
Explore of PH
Observable Properties of acids and bases
Properties of acids and bases
Process
- log on to Web sites by
clicking the Resources and Homework
- answer all homework questions.
- write the summary for the definitions and
the properties of acids and bases.
- fill in the above table.
Evaluation
Your peer will grade your homework.
It is one point for each corrected answer.
The maximun is six points for this homework.
Your total points will account for 10 % of your final grade.
Answers will be posted.
Conclusion
You will be able to
- describe the properties of acids and bases
- define acids and bases.
- explain a neutralization of an acid and a base.
- calculate the concentration of an acid and a base
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