Acids & Bases
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an acid?
Back
An acid is a substance that produces H+ ions in water and has a sour taste. Acids can be corrosive and change litmus paper from blue to red.
2.
FLASHCARD QUESTION
Front
What is a base?
Back
A base is a substance that produces OH- ions in water, has a bitter taste, and feels slippery. Bases change litmus paper from red to blue.
3.
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 to 14. A pH of 7 is neutral, below 7 is acidic, and above 7 is basic.
4.
FLASHCARD QUESTION
Front
What pH value indicates an acidic solution?
Back
A pH value below 7 indicates an acidic solution.
5.
FLASHCARD QUESTION
Front
What pH value indicates a basic solution?
Back
A pH value above 7 indicates a basic solution.
6.
FLASHCARD QUESTION
Front
What is the taste of acids?
Back
Acids typically have a sour taste.
7.
FLASHCARD QUESTION
Front
What is the taste of bases?
Back
Bases typically have a bitter taste.
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