Online Study Guide
Instructions
1) You
do not need to type in your name in the space in the top-left area above. The results of this study
guide will not be sent to your teacher.
2) Carefully read each question and all the answer
choices.
3) Select the correct letter from the drop-down feature to the left of each
question.
4) When you are finished, click the “Check Your Work” button in the
bottom-left corner of the page.
5) The software will grade your work, and then it will show
you the results. Note that the correct answer will be displayed beneath the questions.
6)
Keep doing the study guide over until you earn a 100 on it.
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1.
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ACID QUESTION
A piece of blue litmus
paper is dipped in an acid.
What color does the litmus paper become, and what is the pH
range for acids?
a. | a) bright
yellow
b) pH range is 0 to
14 | b. | a)
red
b) pH range is 0 to
6.9 | c. | a)
green
b) pH range is 7.1 to
14 |
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2.
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ACID
QUESTION
Question with
Two-Parts
(A) After the pH level of a lake changes from 4.5 to 5.5, which 2 organisms will
suffer?
(B) Would this change in pH level be an increase or decrease in acidity?
a. | (A) Trout and Crayfish will suffer
(B) Decrease in acidity | b. | (A) Clams and Bass
will suffer
(B) Increase in acidity | c. | (A) Clams and Snails will suffer
(B)
Decrease in acidity |
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3.
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ACID
QUESTION
An unknown substance will be classified as an acid if the
substance...?
a. | has a pH of 5.5 | b. | turns
blue litmus paper green | c. | tastes
bitter |
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4.
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ACID
QUESTION
A student tests the pH of a container of milk. The
pH of the milk is 5.
How will the milk most likely taste, and is this acidic or
basic?
a. | a)
sweet
b)
basic | b. | a)
sour
b)
acidic | c. | a)
bitter
b)
basic |
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5.
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ACID
QUESTION
Two-Part
Question
Use the chart above to help you answer this question.
(1) What pH level
will kill all the fish in a lake?
(2) Is this pH level more or less acidic than orange
juice?
a. | (1) pH 4.2 and (2) Less | b. | (1) pH 4.2 and (2) More | c. | (1) pH 5.5 and (2)
More |
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6.
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ACID
QUESTION
Which properties most likely indicate that a substance is an
acid?
a. | reacts with metals and is connected with
hydronium ions | b. | turns red litmus
blue and conducts an electric current | c. | turns blue litmus
red but can not conduct an electric current |
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7.
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ACID
QUESTION
Question with Two
Parts
Part One: The pH of a pond is 6.5. Indentify two organisms that can
tolerate that level.
Part Two: Also, is pH 6.5 a strong acid or a weak
acid?
a. | Part One: Clams and Snails
Part Two: It is strong
acid | b. | Part One: Frogs and Mayfly
Part Two: It is a
weak acid | c. | Part One: Frogs and Perch
Part Two: It is a weak
acid |
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8.
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ACID QUESTION
Question with Two-Parts
a) Which of these choices is the pH of a weak acid,
and?
b) Select an example of a substance that is weakly acidic.
a. | a) 7.0
b) Acid rain | b. | a) 6.2
b) Bleach | c. | a) 6.5
b) Lake
water |
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9.
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ACID
QUESTION
Two-Part Question
Use the chart above to help you answer
this question.
(1) What pH level will kill crayfish and mayflies?
(2) Would the lake water
be acidic or basic at that pH level?
a. | (1) pH 4
(2) lake
water at pH 4 is basic | b. | (1) pH 7
(2) pure clean water is neutral | c. | (1) pH
5.5
(2) lake water at pH 5.5 is
acidic |
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10.
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ACID
QUESTION
Candice is working on a project to determine
whether acid rain is decreasing the amount of bass and mayflies in a nearby lake. She takes a sample
of the pH level of the lake, and she finds that the pH level is 6.0.
Based on the chart,
which of the conclusions shown below is valid?
a. | A pH level of 6.0 will affect the bass but not the
mayflies. | b. | A pH level of 6.0
will harm both bass and mayflies. | c. | 6.0 pH level will
not affect any of the animals listed in the chart |
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