Measurements, Accuracy, and Precision Quiz

Determine which of the following statements are quantitative (QN) and which are qualitative (QL). a) _____________ The cup had a mass of 454 grams. b) _____________ The temperature outside is 25 C. c) _____________ It is warm outside. d) _____________ The tree is 30 feet tall. e) _____________ The building has 25 stories. f) _____________ The building is taller than the tree. g) _____________ The sidewalk is long. h) _____________ The sidewalk is 100 meters long. i) _____________ The race was over quickly. j) _____________ The race was over in 10 minutes.

Complete the following chart on the International System of Units-SI

Convert each of the following into scientific notation. a) 3427 _____________ b) 0.00456 _____________ c) 123,453_____________

Convert each into standard form. a) 1.56 x 10 4 b) 5.6 x 10 -3 c) 3.69 x 10 -2 d) 7.369 x 10 5 ____________ ____________ ____________ ____________

Determine the number of significant figures in each of the following: a) 3420701 _________b) 3.00 x 10 -3 __________c) 0.502 __________d) 6.9 x 10 4 __________

What is the correct way to measure an item using significant figures?

For each of the following, write the scale reading, then the number of significant figures in the reading. Reading __________ SF’s______ Reading __________ SF’s______ Reading __________ SF’s______ Reading __________ SF’s______ Reading __________ SF’s______ Reading __________ SF’s______

For each of the volume devices below record the scale reading using significant figures.

A measurement was taken three times. The correct measurement was 68.1 mL. Circle whether the set of measurements is accurate, precise, both, or neither. a. 78.1 mL, 43.9 mL, 2.0 mL accurate precise both neither b. 68.1 mL, 68.2 mL, 68.0 mL accurate precise both neither c. 98.0 mL, 98.2 mL, 97.9 mL accurate precise both neither

A student is given a rock that is known to have a mass of 436.8 grams. She measures the mass of the rock three different times with the following results: 460.9 g, 461.4g, 459.0 g. What can be said about her precision and accuracy?