What is density?
Physical Science Chemistry Review

Flashcard
•
Chemistry
•
KG - University
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Density is the mass of a substance divided by its volume, usually expressed in g/cm³.
2.
FLASHCARD QUESTION
Front
How do you calculate density?
Back
Density = Mass / Volume.
3.
FLASHCARD QUESTION
Front
What is a coefficient in chemistry?
Back
A coefficient is the large number placed in front of a chemical formula to indicate how many molecules are present.
4.
FLASHCARD QUESTION
Front
What does pH measure?
Back
pH measures the concentration of hydrogen ions (H⁺) in a solution.
5.
FLASHCARD QUESTION
Front
Which solution has the highest acidity?
Back
Vinegar has the greatest concentration of H⁺ ions.
6.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.
7.
FLASHCARD QUESTION
Front
Give an example of a physical change.
Back
Crumpling paper is an example of a physical change.
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