# Shared Flashcard Set

## Details

NUR 879 Final
Key Points for Final in NUR 879
76
Nursing
04/22/2014

Term
 Accuracy
Definition
 "Refers to how close a measurement is to some accepted or true value (a standard)"
Term
 What is used to express accuracy?
Definition
 Percent Error
Term
 Precision
Definition
 "refers to reliability, repeatability, or consistency of a measurement"
Term
 What is used to express precision?
Definition
 Significant digits
Term
 2.54 cm = ? inches
Definition
 1 inch
Term
 2.20 lb= ? kg
Definition
 1 kg
Term
 What is temperature really a measure of?
Definition
 The average motion (kinetic energy) of the molecules
Term
 o Kelvin= ? degrees Celsius
Definition
 -273.15 degrees Celsius
Term
 What is the equation to convert Celsius to Kelvin
Definition
 K= degrees Celsius + 273
Term
 What is the equation to convert kelvin to Celsius?
Definition
 degrees Celsius= K -273
Term
 What do you use to measure mass?
Definition
 A Balance
Term
 What do you use to measure weight?
Definition
 A scale
Term
 Conversion for mass to weight
Definition
 1 kg/2.2 lbs
Term
 Extensive properties
Definition
 Depends on the amount of a substance (mass and volume)
Term
 Intensive properties
Definition
 Are independent of the size of the sample. They are useful for identifying substances (melting point, boiling point, density).
Term
 heat
Definition
 heat= specific heat x mass H2O x change in temperature
Term
 Specific heat of H2O
Definition
 1 cal/g*C= 4.184 J/g*C
Term
 Heat is?
Definition
 Total KE
Term
 Temperature is?
Definition
 Average KE
Term
Definition
 1 mole of any substance contains 6.02 x 10^23 molecules
Term
 Molar Volume
Definition
 1 mole of any gas has a volume of 22.4 L (at P=760mmHg, T=0 degrees celsius
Term
 1 mole
Definition
 6.02 x 10^23 molecules, or 22.4 L
Term
 How many sig figs are in 1022?
Definition
 4
Term
 How many sig figs are in 0.005005?
Definition
 4
Term
 How many sig figs are in 0.0004?
Definition
 1
Term
 How many sig figs are in 4.000?
Definition
 4
Term
 How many sig figs are in 0.0200?
Definition
 3
Term
 How many sig figs are in 200.?
Definition
 3
Term
 How many sig figs are in 4000?
Definition
 1
Term
 What is the mass number equal to (aside from the # of protons and neutrons)?
Definition
 grams/mol of that element. For example, Magnesium has a mass number of 24.3 and that means for each atom of magnesium there are 24.3 grams/mol.
Term
 Democritus
Definition
 (atomos)-"philosopher who argued that matter was discontinuous
Term
 John Dalton
Definition
 -"billiard ball model"-experimented with gases-different substances are composed of different atoms-"Atomic theory, all matter is composed of indestructible atoms"
Term
 J.J. Thompson
Definition
 -plum-pudding model-"atoms have + and - parts"-"the negative electrons are the same for any atom"
Term
 Ernest Rutherford
Definition
 -nuclear/solar system model-"most of the mass of the atom is concentrated in a tiny, positively-charged nucleus"
Term
 Niels Bohr
Definition
 -quantized electron energy levels-"the electrons have only certain allowed energy levels"-electron orbitals
Term
 Mendeleev
Definition
 -organized the periodic table by atomic number and predicted undiscovered elements
Term
 Pauli Exclusion Principle
Definition
 -"no two electrons in an atom may have the same four quantum numbers. This translates to the idea that an orbital may contain no more than two electrons.
Term
 Aufbau Principle
Definition
 Electrons occupy the lowest energy level available orbital
Term
 Hund's Rule
Definition
 -When you have several orbitals of the same energy (three p orbitals, five d orbitals), place one electron in each orbital before doubling them up.
Term
 Electron Affinity
Definition
 Energy involved when an atom gains an electron to become a negative ion.-elements in the upper right hand corner of the periodic table have the greatest electron affinity (greatest attraction for electrons).
Term
 What does O Kelvin mean?
Definition
 0 Kinetic Energy
Term
 What is Standard Temperature and Pressure
Definition
 P= 1 atm (760 mmHg, 101.3 kPa)T= 0 degrees Celsius
Term
 Effusion
Definition
 -Similar to diffusion, it means to escape from a small opening
Term
 Pressure
Definition
 Is due to collisions of gas particles with the walls of the container.
Term
 The 7 elements that exist in diatomic molecules
Definition
 - H O N CL Br I F-way to remember "H and the 6 that make a 7, starting with element #7"
Term
 law of conservation of mass
Definition
 -the mass of all the reactant molecules = the mass of all the product molecules
Term
 law of definite composition
Definition
 -the percentage composition of any sample of a a substance is the same
Term
 law of multiple proportions
Definition
 -when two compounds made of the same two elements (such as CO and CO2) are broken down to give the same mass of one element...the masses of the other element will be in a simple whole-number ratio
Term
 Dobereiner
Definition
Term
 Newlands
Definition
 Law of octaves for similar elements
Term
 Meyer
Definition
 "close to modern periodic table"
Term
 Dimitri Mendeleev
Definition
 "first to publish, predicted missing elements, his table was very detailed"
Term
 ionization energy
Definition
 energy needed to remove an electron from an atom
Term
 The principle quantum number, n
Definition
 As n increases, the average distance of the valence electrons from the nucleus increases...making the atom larger
Term
 inch (original measurement)
Definition
 the width of the thumb
Term
 digit (original measurement)
Definition
 width of the middle finger 3/4inch
Term
 palm (original measurement)
Definition
 width of four fingers (3 inches)
Term
 span
Definition
 spread of the hand 9 inches
Term
 foot
Definition
 the length of a foot 12 inches
Term
 cubit
Definition
 distance from elbow to tip of middle finger (18 inches)
Term
 yard
Definition
 distance from the center of the body to the fingertips of the outstretched arms (36 inches
Term
 fathom
Definition
 distance spanned by outstretched arms (72 inches)
Term
 Calorie
Definition
 the amount of heat needed to raise the temperature of 1.0 gram of water by 1 degree celsius at 15 degrees celsius
Term
 erg
Definition
 the energy involved when a force of one dyne acts through a distance of one centimeter
Term
 dyne
Definition
 the force required to produce an acceleration of one centimeter per second squared on a mass of one gram
Term
 angstrom
Definition
 the unit of length the was commonly used in describing sizes of atoms. one angstrom is equal to 1/10 of a nanometer
Term
 tonne
Definition
 -or metric ton-is equal to 1000 kg
Term
 atmosphere
Definition
 the unit of pressure based on the earth's standard air pressure at sea level.
Term
 liter
Definition
 an established unit of volume in nations using the metric system. -it is equal to one cubic decimeter
Term
 electronvolt (eV)
Definition
 the kinetic energy acquired by an electron passing through a potential difference of 1 volt in a vacuum-1 of 2 units of energy obtained in the SI system, whose values are obtained by experiment
Term
 unified atomic mass unit (u)
Definition
 equal to the fraction of 1/12 of the mass of an atom of the nuclide carbon-12.
Term
 meter
Definition
 -originally measured to be one ten-millionth of the distance from the north pole to the equator along the meridian running near Dunkirk, Paris, and Barcelona-Redefined as length traveled by light in a vacuum during 1/299792457 of a second.-
Term
 kilogram
Definition
 -the mass of a particular cylinder of platinum-iridium alloy, called the international Prototype Kilogram. -Only unit still defined by an artifact-derive from the mass of a cubic decimeter of water
Term
 second
Definition
 -originally defined as 1/86,400th of a mean solar day-Redefined as 9,192,631,770 periods of radiation between two levels of fundamental state cesium-133 atom
Term
 Kelvin (K)
Definition
 1/273.16 of the temp interval between absolute zero and the triple point of water. -An interval of Kelvin is = to an interval of Celsius
Term
 mole
Definition
 the amount of substance which contains as many entities as there are atoms in exactly 0.012 kg of carbon-12.
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