First, one should illustrate the concept of defining units through fundamental constants. Bring in a digital bathroom scale (for kg) and/or a sensitive digital kitchen scale (for grams) Bring in objects of various weights and invite participants to guess the weight in kilograms/ grams, and then weigh the objects to verify. For example, the derived unit for the derived quantity molar mass (mass divided by amount of substance) is the kilogram per mole, symbol kg/mol Additional examples of derived units expressed in terms of si base units are given in table 2. Units, the kilogram (kg) is preferred over the gram
By definition, a kmol is defined as 1000 mol, or 6.0251 x 1026 molecules of the substance. The following information is useful in converting metric system units to english system units G = gram = 0.0022 pounds kg = kilogram = 1,000 grams = 2.205 pounds mg = megagram = 1,000 kilograms = 1 metric tonne = 1.10 u.s Tons mg = milligram = 0.001 grams Kilograms and grams grade 4 measurement worksheet note 1 kilogram (kg) = 1,000 grams (gm) convert kilograms to grams 32 kg = 32,000
