10 Questions
What is the key to significance in experimental measurements?
Repetition
How can an experimenter have confidence in the significance of measurements?
By repeating measurements
What do significant figures in a number consist of?
Certain digits and one doubtful digit
Based on the text, what is the rule regarding the decimal places in an answer when adding or subtracting quantities?
No more decimal places than the least accurate measurement
What is a desirable feature for the sides of a graduated cylinder according to the text?
Perfectly vertical
How many significant figures are in the number 70.03?
Four
Which of the following calculations involves the proper use of significant figures?
(18.09 + 7.0001) / (3.7 x 2.0005)
What is the correct volume, with the correct number of significant figures, of a sample of nickel that weighs 7.5425 g and has a density of 8.8 g/cm3?
0.86 cm3
When multiplying and dividing quantities, what should be done to maintain proper significant figures?
Maintain the number of significant figures in the least precise measurement
In the expression 0.01208 / 0.0236, up to how many decimal places should the answer be reported?
Three
Explore how traditional markets use indigenous measurement methods for buying and selling goods on a centimeter scale. Discover how measurement is crucial in the study of chemistry for comparing properties and quantities. Figure 2.1 depicts a traditional market scene with people exchanging goods based on estimated sizes.
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