What does it indicate if blue litmus paper remains blue when placed in a substance?
pH, acids and bases

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•
Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The substance is a base.
2.
FLASHCARD QUESTION
Front
What type of solution has more H3O+ ions than OH- ions?
Back
Solutions with a pH lower than 7.
3.
FLASHCARD QUESTION
Front
What color does Congo red turn in the presence of an acid?
Back
Blue.
4.
FLASHCARD QUESTION
Front
Which indicator is best for determining the pH of vinegar?
Back
Bromothymol blue.
5.
FLASHCARD QUESTION
Front
What is the product of the reaction between H3O+ and OH-?
Back
Water.
6.
FLASHCARD QUESTION
Front
What is the pH range of acidic solutions?
Back
pH less than 7.
7.
FLASHCARD QUESTION
Front
What is the pH range of basic solutions?
Back
pH greater than 7.
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