pH scale and indicators
Flashcard
•
Chemistry, Science
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the pH scale?
Back
The pH scale is a measure of how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.
2.
FLASHCARD QUESTION
Front
What pH value indicates a strong acid?
Back
A strong acid has a pH value close to 0, typically around 1.
3.
FLASHCARD QUESTION
Front
What pH value indicates a strong alkali?
Back
A strong alkali has a pH value close to 14.
4.
FLASHCARD QUESTION
Front
What pH value is considered neutral?
Back
A neutral pH value is 7.
5.
FLASHCARD QUESTION
Front
What ion do all alkalis contain?
Back
All alkalis contain hydroxide ions (OH⁻).
6.
FLASHCARD QUESTION
Front
What ion do all acids release in solution?
Back
All acids release hydrogen ions (H⁺) in solution.
7.
FLASHCARD QUESTION
Front
What is a weak acid?
Back
A weak acid is an acid that does not completely dissociate in solution, typically having a pH value above 1 but below 7, such as acetic acid.
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