pH Scale, Acids, and Bases
Flashcard
•
Science
•
8th Grade
•
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 substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.
2.
FLASHCARD QUESTION
Front
What does a pH less than 7 indicate?
Back
A pH less than 7 indicates that a substance is acidic.
3.
FLASHCARD QUESTION
Front
What does a pH greater than 7 indicate?
Back
A pH greater than 7 indicates that a substance is basic (alkaline).
4.
FLASHCARD QUESTION
Front
What is an acid?
Back
An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.
5.
FLASHCARD QUESTION
Front
What is a base?
Back
A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.
6.
FLASHCARD QUESTION
Front
What is a neutral solution?
Back
A neutral solution has a pH of 7, meaning it is neither acidic nor basic.
7.
FLASHCARD QUESTION
Front
What is litmus paper used for?
Back
Litmus paper is used to test the acidity or basicity of a solution; blue litmus paper turns red in acidic solutions, while red litmus paper turns blue in basic solutions.
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