CHEM H90 Lecture Notes - Lecture 3: Kilogram, Ampere, Junkers J 1
Document Summary
Si units: standard units are 1 m (length), 1 s (time), 1 kg (mass), k (temperature, make all others as combinations of these (e. g. ) speeds is m/s, energy is j = 1 kg m/s2. International system (si) is based on the metric system. Fundamental units of the si system: mass: kilogram (kg, length: meter (m, time: second (s, temperature: kelvin (k, electric current: ampere (a, amount of substance: mole (mol) Mass: the standard si unit of mass is kilogram (kg) In chemistry, we often use the gram (g) as the practical unit for mass: 1 kg = 1000 g = 1 x 103 g, 1 g = 0. 001 kg = 1 x 10-3 g. Length: the standard si unit of length is meter (m, the meter is the length of the path travelled by light in vacuum during a time interval of.
