Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 1 - Chemical Foundations - Questions: 20

Answer

A qualitative observation describes a feature of something without using measurements/units.; grams, meters, meters cubed; The assumed uncertainty of a number is plus or minus 1 from the last significant digit of the number.; The measuring device determines the amount of significant figures.

Work Step by Step

A qualitative observation describes a feature of something without using measurements/units. Qualitative observations may concern smell, touch, sound, etc. The SI unit for mass is grams, the SI unit for length is meters, and the SI unit for volume is meters cubed. The assumed uncertainty of a number is plus or minus 1 from the last significant digit of the number. The uncertainty of a number depends on the precision of the measuring device because the measuring device determines the amount of significant figures.
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