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Chapter 1, Measurements

J.K.'s chem 121

Define "Chemistry"The study of matter, its composition, any transformation it undergoes, and the energy that accompanies that transformation.
Define "Organic Chemistry"The study of carbon compounds.
Define "Inorganic Chemistry"The study of all non-carbon compounds.
Define "Matter"Anything that has mass and occupies space.
Define "Density"Mass per unit volume. Formula: D=M / V. For solids g/cc, liquids g/ml, gasses g/l.
How do you determine "Kelvin" temperature.Celcius temperature plus 273 = ______. No degree sign is used.
What is the formula to convert Celcius to Fahrenheit temperature?F = C * 1.8 + 32
What is the formula to convert Fahrenheit to Celcius temperature?C = (F - 32) / 1.8
Define "Concentration"Number or mass of particles in a given quantity. i.e. g/l, parts per million, moles/l.
Define "Heat"Energy associated with motion. Particles move faster with more ____ energy. Quantity dependant!
Define "Temperature"Measure of intensity. Measures the degree of hotness of an object. Measures particle speed. No quantity limits!
Define "Kinetic Energy"Energy due to motion.
Define "Potential Energy"Energy due to position.
Define "Energy"Ability to do work.
Define "Significant figures"#'s 1-9, 150=2, .05=1, .050=2, 105=3, 10.0=3, .0500=3 sig fig's.
Define "Precision"How close your trials are to each other.
Define "Accuracy"How close your trials are to the true value.
Define "Mass"Quantity of matter in an object. ____ is a constant.
1 meter (m) = ? centimeters (cm)100 cm
1 meter (m) = ? millimeters (mm)1000 mm
1 kilometer (km) = ? meters (m)1000 m
1 centimeter (cm) = ? decimeters (dm).1 dm
1 inch (in.)= ? centimeters (cm)2.54 cm
1 meter (m) = ? inches39.4 in.
1 liter (l) = ? milliliters (ml)1000 ml
1 quart (qt) = ? milliliters (ml)946 ml
1 liter (l) = ? quarts (qts)1.06 qts
1 kilogram (kg) = ? grams (g)1000 g
1 pound (lb) = ? grams (g)454 g
1 kilogram (kg) = ? pounds (lb)2.2 lbs

Bob P.

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