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Ch. 1 & Ch. 2 Multiple Choice Questions
Terms in this set (15)
Which of the following conversion factors involves a measured number?
Which of the following is the smallest unit?
A researcher needed three samples of sodium chloride solution, each with a volume of 0.03510 mL. The total
volume needed, if the three volumes are added together, should be reported as ________.
A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?
How many significant figures are in the number 0.00208?
Significant figures are important because they indicate ________.
the number of digits in a measurement
Which of the following is the SI unit of mass?
Which of the following numbers is the smallest?
4.0 × 10^-12
The measurement 0.000043 m, expressed correctly using scientific notation, is ________.
4.3 × 10^-5 m
Which of the following is NOT a chemical?
The measurement of the gravitational pull on an object is its ________.
Accuracy refers to ________.
how close a measured number is to the true value
You notice that there is more traffic between 8 and 9 in the morning. This would be a(n) ________.
Chlorofluorocarbons are broken down in the atmosphere by ________.
Precision refers to ________.
how close a measured number is to other measured numbers
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