Answer
Sentences 1 and 4 are observations
Work Step by Step
Sentences 1 and 4 are observations because they are stating the things that took place during the experiment which are the observations.
Chemistry (12th Edition)
by Wilbraham
Published by
Prentice Hall
ISBN 10:
0132525763
ISBN 13:
978-0-13252-576-3
Chapter 1 - Introduction to Chemistry - Standardized Test Prep - Page 31: 8
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