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### 48 Cards in this Set

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 Base Quantity: Length Name of Unit: Meter (m) Base Quantity: Mass Name of Unit: kilogram (kg) Base Quantity: Time Name of Unit: second (s) Base Quantity: Electrical current Name of Unit: ampere (A) Base Quantity: Temperature Name of Unit: kelvin (K) Base Quantity: Amount of substance Name of Unit: mole (mol) Base Quantity: Luminous intensity Name of Unit: candela (cd) Mass is a measure of the quantity of matter in an object. Define MASS Weight is the force that gravity exerts on an object. Define WEIGHT 10^12 T tera- 10^9 G giga- 10^6 M mega- 10^3 k kilo- 10^-1 d deci- 10^-2 c centi- 10^-3 m milli- 10^-6 u micro- 10^-9 n nano- 10^-12 p pico- 1 kg = 1000g = 1x10^3gram mass Volume is length(m)CUBED 1cm^3 = (1x10^-2m)^3 = 1x10^-6m^3 volume A liter is the volume occupied by one cubic decimeter liter One liter = 1000 milliliter(L) mL mL 1 mL = 1 cm^3 One milliliter = one cubic centimeter cubic centimeter Density is the mass of an object divided by its volume D = m/v define density Density is an intensive property. As such, does not depend on teh quantity of mass present. The ratio of density always remains the same for a given material - regardless of quantity. density - an intensive property SI unit for density is: kg/m^3 Common unit is grams/milliliter: g/mL (solid and liquid density) SI unit for density Fahrenheit scale: freezing is 32F boiling is 212F Fahrenheit Celsius scale: freezing is 0C boiling is 100C Celcius Kelvin scale: the official SI Unit for temperature. Absolute temperature scale. 0K is lowest theoretical temp Kelvin scale The size of a DEGREE on the Fahrenheit scale 5/9 of a degree on the Celsius scale Formula to convert Fahrenheit degrees to Celsius ?C = (F-32F) x 5/9 ?C = (F-32F) x 5/9 Formula to convert Celcius to Fahrenheit ?F = 9/5 x C + 32F ?F = 9/5 x C + 32F T/F: One degree of Celcius is equal in magnitude to one degree of Kelvin true What is absolute zero on the Kelvin scale = on the Celsius scale? -273.15C -273.15C Convert Celcius to Kelvin: ?K = (C + 273.15C)x 1K/1C ?K = (C + 273.15C)x1K/1C Regardless of magnitude, all numbers can be expressed as: N x 10^n N x 10^n Scientific notation: If the decimal is moved to the left, it is a ____integer. If to right, it is a _____interger Left ---positive integer Right ---negative integer T/F In significant figures, it is assumed that the last digit is understood to be "uncertain" T Rules for Significant Digits: - Any digit not a zero is significant. - Zeros between nonzeros significant. - Zeros to left are NOT significant. - Zeros to right significant - Trailing zeros (after last nonzero digit) may/may not be and needs scientific not. significant digit rules Add/Sub, answer cannot have more digits to the right of the decimal point than either of original numbers T Round-off procedure: - Drop digits if less than 5 - Equal or greater than 5, round up T Mult/Div: #of signficant figures determined by the original number that has smallest # of signficant figures T Exact numbers obtained from definitions (eg 1ft = 12 in), or by counting # of objects ---- considered to have an infinite number of significant figures T Accuracy: How close a measurement is to the true value of the quantity measured. Accuracy Precision: How closely two or more measurements of the same quantity agree with one another. Precision Dimensional Analysis = Factor Label Method Uses relationships between different units to express the same physical quantity Dimensional analysis Grams to Milligrams: 1x10^-3 = 1 mg 1000 mg = 1 gram