
Acids, Bases & pH Scale Bell Ringer
Authored by Carletta Perry
Chemistry
9th - 12th Grade
Used 9+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When you place blue litmus paper into an unknow solution, the blue litmus paper turns red. Which of the following indicates the most logical conclusion?
The substance has a pH of 7.
The substance has a pH of 14.
The substance is an acid
The substance is a base
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
As an acidic solution is added to a basic solution, the pH of the basic solution
increases
decreases
remains the same
multiplies
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What range of values on the pH scale represent solutions with a higher ration of hydroxide (OH-) ions?
0-14
below 6
above 7
7
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which statement correctly describes a solution with a pH of 9?
It has a higher concentration of H3O+ than OH- and causes litmus to turn blue
It has a higher concentration of H3O+ than OH- and causes phenolphtalien to turn pink.
It has a higher concentration of OH- than H3O+ and causes litmus to turn blue
It has a higher concentration of OH- than H3O+ and causes phenolphtalien to turn colorless.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following statements is correct?
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A solution has a pH of 7.0.
What would happen to the pH if H3O+ ions were added?
pH would go down
pH would go up
pH would stay the same
None of these
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which one of the following is NOT a property of basic solutions?
Feels soapy/slippery
Tastes sour
Conducts electricity
Turns red litmus paper blue
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