Slide 1Uncertainty in Measurements Measurements always involve a comparison. When you say that a table is 6 feet long, you're really saying that the table is six times…

Prerequisite Science Skills Dr. Tenery • A measurement is a number with a unit attached. • It is not possible to make exact measurements, thus all measurements have uncertainty.…

Slide 1 Measurements & Calculations Chapter 2 Slide 2 SCIENTIFIC NOTATION Section 2.1 Objective: show how very large or very small numbers can be expressed as the product…

Slide 1 METRIC SYSTEM & NUMBERS Unit Conversions in metric units Temp. scales Scientific notation Significant figures 1 lb =454g 1 in = 2.54 cm 1 gal = 3.79 l F = 1.8…

Slide 1 Dr Ali Bumajdad http://kweb.kuniv.edu.kw/~bumajdad/ Slide 2 Slide 3 Chemistry: The Study of Change Chapter 1 Dr. Ali Bumajdad Copyright © The McGraw-Hill Companies,…

1.   2. Physical or Chemical? Aphysical changedoes not alter the composition or identity of a substance. Achemical changealters the composition or identity of the substance(s)…