Chapters 1 & 2 GAC Chemistry

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•
Science, Chemistry
•
10th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What are significant figures?
Back
Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.
2.
FLASHCARD QUESTION
Front
How many significant figures does the number 0.002570 have?
Back
4
3.
FLASHCARD QUESTION
Front
How do you convert micrograms to kilograms?
Back
To convert micrograms to kilograms, divide the number of micrograms by 1,000,000 (1 kg = 1,000,000 µg).
4.
FLASHCARD QUESTION
Front
Convert 543 micrograms to kilograms.
Back
0.000543 kg
5.
FLASHCARD QUESTION
Front
What is the formula for density?
Back
Density = Mass / Volume.
6.
FLASHCARD QUESTION
Front
An object is placed in a graduated cylinder and the water level rises from 50 mL to 60 mL. What is the volume of the object?
Back
The volume of the object is 10 mL.
7.
FLASHCARD QUESTION
Front
If the mass of an object is 20 grams and its volume is 10 mL, what is its density?
Back
Density = 20 g / 10 mL = 2 g/mL.
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