CHEM 120 Final: Final Exam Review great overall review of all concepts covered

• School: Simon Fraser University
• Department: Chemistry
• Course: CHEM 120
• Professor: Richard Oakley

Document Summary

Significant figures i) count from left to right starting from first non-zero digit. Common si units length: meter, m mass: kilogram, kg. Common non si units length: angstrom, a (10-8 cm) energy: calorie, cal, 4. 184j pressure: 1 atmos = 1. 064x10^2 kpa = 760 mmhg. Derived quantities force: ma, newton, kg m/s pressure: pascal, kg/m s^2 energy: joule, kg m^2/s^2. Precision-reproducibility; accuracy-correctness temperature: kelvin, k amount: mole, 6. 022x10^23 (# atoms in exactly 12g c12) volume: litre, l (10-3 m3) time: second, s. Thomson-blueberry muffin model (charge to mass ratio of an electron) Millikan-establishes charge, hence mass of electron (1. 6 x 10^-19 c) Rutherford-gold foil experiment (provides nuclear model of atom empty space!) Atoms: z=atomic number, # of protons, # of electrons (neutral atom) Average atomic mass = *isotope1 * (percent/100)+ + *isotope2 * (percent/100)+ . Conversion equations- moles = mass*molar mass, molecules = mass*6. 022x 10^23, atoms = molecules * #atoms in molecule.