NAMES: ______________________________________________________________________________
Acids & Bases: Web & Book Research
What do you know about acids and bases?
What do you want to know about acids and bases?
Compile a list of COMMON acids and bases, and their specific pH’s. (5 of each)
Acids
___
pH Bases
1.
1.
2.
2.
3.
3.
4.
4.
5.
5.
___
pH
List 5 GENERAL PROPERTIES of acids and bases:
Acids
Bases
1.
1.
2.
2.
3.
3.
4.
4.
5.
5.
For what does pH stand? _________________________________________________ What do you
think this means? __________________________________________________________________
What is the name and symbol of the ion that is used to represent acids? _________________________
and bases? ________________________________________
What types of compounds are acids and bases? (circle one) IONIC or COVALENT
What do
they do in water that would prove this true? ___________________________________________
1
Find a website to create a pH scale that includes common acids and bases. Indicate the numbers that
represent ACIDS and the numbers that represent BASES, as well as the number(s) that represent
NEUTRAL.
pH
COLOR the number that represents MAXIMUM ACIDITY red. What is the concentration of H+ ions
(hydrogen ions) like at this number? _____________________________________________________
COLOR the number that represents MAXIMUM ALKALINITY (BASICITY) blue. What is the
concentration of OH- ions (hydroxide ions) like at this number? _______________________________
COLOR the number that represents NEUTRALITY green. What do you think the concentration of H+
ions (hydrogen ions) and OH- ions (hydroxide ions) is like at this number? _______________________
In which direction does the amount of H+ ions INCREASE? (up or down the scale?) In which
direction does the amount of H+ ions DECREASE? (Up or down the scale?) WRITE THIS
USING ARROWS NEXT TO THE SCALE ABOVE.
IN YOUR OWN WORDS: What is “neutralization” (for acids and bases)?
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
2
Write a chemical equation that shows neutralization.
Under each reactant and product, label the NAME and the pH value.. How did the pH change?
____________________________________________________________________________________
____________________________________________________________________________________
EXTRA CREDIT (just this question): What else is produced when acids and bases are mixed together
that can make the reaction DANGEROUS?
___________________________________________________________________________________
What are some reasons that environmentalists would be interested in the pH of water in streams and
lakes and ponds and rivers? Give at least 3 reasons.
Define ALKALINITY, and explain why it is related to the health of a stream.
Define Acid Rain: ____________________________________________________________________
___________________________________________________________________________________
Name 3 countries that are struggling with this problem:
____________________________________________________________________________________
3