Acids and Bases

Flashcard
•
Biology
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the pH scale and what does it measure?
Back
The pH scale measures the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.
2.
FLASHCARD QUESTION
Front
How does the concentration of H+ ions relate to pH?
Back
The pH of a solution is inversely related to the concentration of hydrogen ions (H+); as the concentration of H+ increases, the pH decreases.
3.
FLASHCARD QUESTION
Front
What is the difference between a strong acid and a weak acid?
Back
A strong acid completely dissociates in water, releasing all its H+ ions, while a weak acid only partially dissociates.
4.
FLASHCARD QUESTION
Front
What is the significance of a pH of 7?
Back
A pH of 7 is considered neutral, meaning the concentration of H+ ions is equal to that of OH- ions.
5.
FLASHCARD QUESTION
Front
How many times more acidic is a solution with a pH of 3 compared to a solution with a pH of 6?
Back
A solution with a pH of 3 is 1,000 times more acidic than a solution with a pH of 6.
6.
FLASHCARD QUESTION
Front
What role do buffers play in biological systems?
Back
Buffers help maintain a stable pH in biological systems by neutralizing small amounts of added acid or base.
7.
FLASHCARD QUESTION
Front
What is the typical pH range of human blood?
Back
The typical pH range of human blood is around 7.35 to 7.45.
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