How many significant figures does the number 0.00450 have?
Chemistry Semester 1 Final Review

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Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
3 significant figures.
2.
FLASHCARD QUESTION
Front
Convert 250,000 micrograms (μg) into grams (g).
Back
0.25 g.
3.
FLASHCARD QUESTION
Front
What is the best classification of matter for the air we breathe every day?
Back
Homogeneous mixture.
4.
FLASHCARD QUESTION
Front
How would you classify the substance, Au?
Back
Pure substance, element.
5.
FLASHCARD QUESTION
Front
What is the chemical name for SF6?
Back
Sulfur hexafluoride.
6.
FLASHCARD QUESTION
Front
Define significant figures in measurements.
Back
Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal portion.
7.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture in which the composition is uniform throughout, such as air or saltwater.
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