Note: Answers to all odd-numbered Problems, numbered in blue, can be found in Appendix III. Exercises in the Problems by Topic section are paired, with each odd-numbered problem followed by a similar even-numbered problem. Exercises in the Cumulative Problems section are also paired but more loosely. Because of their nature, Challenge Problems and Conceptual Problems are unpaired.
The Units of Measurement
Use scientific notation to express each quantity with only the base units (no prefix multipliers).
a. 35 \(\mu L\)
b. 225 Mm
c. 133 Tg
d. 1.5 cg
Text Transcription:
mu L
WEEK 1 NOTES 8/22/16 – 8/26/16 Chapter 1: Matter and Measurement A. Chemistry- study of matter and how it changes; deals with the composition, structure, and reactions of matter a. Mass- the measure of the quantity of matter b. Weight- a result of the gravitational attraction between matter; a force but is often used interchangeably with “mass” c. Atoms- “building blocks” of matter d. Molecules- two or more atoms that have joined together e. Composition i. The kinds of atoms that matter contains ii. Can be at the macroscopic (can be seen and handled) or submicroscopic (atoms and molecules) level iii. Qualitative (what substances it is made of) or quantitative (the number of substances it is made of) f. Structure i. Arrangement; how atoms are put together ii. Makes a difference in what the final product is 1. EX: a sandwich layered in the usual order is different than a sandwich layered with the lettuce and cheese on the outside and the bread on the inside g. Reactions i. Occurs when the composition and structure changes ii. Exothermic (gives off heat) and endothermic (absorbs heat) B. Matter- anything that has mass and occupies space; physical material a. States of matter i. Gas (also known as vapor)
