CHEM 110, Week 1 & 2 Notes
CHEM 110, Week 1 & 2 Notes CHEM 110
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This 2 page Class Notes was uploaded by BritneyMoore on Tuesday April 26, 2016. The Class Notes belongs to CHEM 110 at California State Polytechnic University taught by Dr. Hoda Mirafzal in Spring 2016. Since its upload, it has received 6 views. For similar materials see Chemical Principles I in Chemistry at California State Polytechnic University.
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Date Created: 04/26/16
CHEM 110 04/13/2016 ▯ Standards of Measurement When we measure, we use a measuring tool to compare some dimension of an object to a standard ▯ Scientific Notation A number is expressed in scientific notation when it is in the form “a x 10^n” where a is between 1 and 9 and n is an integer ▯ Mnemonic for Metric Prefixes: ▯ Terrier (tera) Gigantic (giga) o Meg’s (mega) Killed (kilo) Hector (hector) Decadent (deca) o Base ▯ Base Decidedly (deci) o Certain (centi) Millipede (milli) Mice (micro) Need (nano) o Pie (pico) ▯ Metric Volume 1L = 1 cubic decimeter 1 mL = 1 cubic cm ▯ Volume Conversions 1 fl oz = 30ml 1 12 oz can of soda = 360 ml 1 gal = 3.8 L .95 L = 1 qt ▯ Measuring Volume Graduated cylinders are used to find the volume of liquids and pourable solids (be careful with the meniscus curve!) Volume of an irregular object is measured using water displacement ▯ Mass and weight Mass is the amount of matter in an object Weight is a measure of thee gravitational force acting on an object (proportional to mass) 1 kg = the mass of the International Prototype Kilogram, a cylinder kept by the BIPM in France ▯ Mass and Weight Conversions 1 oz= 28 g 1 kg = 2.2 lbs ▯ Dimensional Analysis Used to convert from one system of units to another You know the initial units multiplied by a conversion factor to find the final units, or the units you are trying to find ▯ ▯
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