Chapter 1: Background and Basics
MEASUREMENTS: - chemistry uses both quantitative (numerical) and qualitative (non-numerical) aspects - SI unites - system international of units of measure - "official" - Measurement Prefixes: Giga - G 109 Mega - M 106 Kilo - K 103 Centi - C 10-2 Milli - m 10-3 Micro - ? 10-6 Nano - n 10-9 Pico - p 10-6 - base units - length (meter - m) - Mass (kilogram, kg) - Time (second - s) - derived units - function of base units - speed (m/s) - Volume (L) - density (m/V) - temperature - Celsius Fahrenheit Kelvin(absolute temp. (0 K) scale) H2O boils at = 100?C 212?F 373K H2O freezes at = 0?C 32?F 273K