Chemistry Final Review Flashcards
Homogeneous mixture
completely blended
Hypothesis
if than statement, educated guess
Qualitative
Opiniated basically
density
mass in an object
mass/unit volume
extensive property
property depending on mass of object (volume, mass, etc.)
physical change
a change that changes the appearance, not the chemical properties (bending metal)
accuracy
how close a measurement is to the intended value
significant figure
the amount of digits represented based on previous calculations
metal
elements that have luster and conduct energy/heat. Generally ductile
ductile
bendable into thin wire
theory
generally accepted ideas
quantitative
number based results
heterogeneous mixture
mixture where individual parts are visible (salad)
physical property
appearance
intensive propterty
properties that do not rely on mass (can be color, smell, etc.)
sublimination
solid to gas, w/o passing through liquid state
precision
how close numerous results are to each other
group (family)
columns
metalloid
have both properties of metals and nonmetals; zigzag line on table
inference
conclusion from information that doesn’t state the conclusion
pure substance
all one thing in the mixture
solution
homogenous mixture mixted to limit of solubility
chemical property
property that is revealed during or after a reaction
chemical change
change in chemical composition
System International
global system of measurement
percent error
how close a lab result is to accepted result
period (series)
side to side rows on table
malleable
moldable
Democritus
contribution
theorized existance of atoms
John Dalton
year, contribution
1808; accepted existence of atoms, billard ball model
JJ Thomson
year, model type, contribution
1904; plum pudding model, electrons discovered
Milikin
electron charge, oil drop experiment
Quantum Mechanical model
year, people, contribution
1920; Einstein, Schrödinger, etc., orbitals discovered
Rutherford
year, model, experiment, contribution
1911; nuclear model, goldfoil experiment discovered nucleus
Bohr
year, model, contribution
1913; solar system model, orbits discovered
HC2H3O2
acetic acid
Co2S3
Cobalt (III) sulfide
Pb3(PO4)2
Lead (II) phosphate
Sr3N2
Stronium nitride
Na2CrO4
Sodium chromate
NH4NO2
Ammonium nitrite
sulfur difluoride
SF2
lithium nitride
Li3N
ammonium acetate
NH4C2H3O2
mercury (I) chloride
Hg2Cl2
sodium dichromate
Na2Cr2O7
nitrous acid
HNO2
zinc sulfide
ZnS
sodium dihydrogen phosphate
NaH2PO4
Oxidation
loss of electrons
reduction
gain electrons
synthesis reaction
multiple compounds react to form one compound
decomposition reaction
one compound reacts to form multiple compounds
single displacement reaction
one element replaces another
light travels like a ___ and strikes like a ___
wave; particle
light is separated into colors using a ___
diffraction grating or prism
the distance between crests or troughs is ___
wavelength
height of the wave is ___
amplitude
number of crests passing through a point per second is ___
frequency
wavelength units are
meters
frequency unit
Hertz, Hz, s^-1
relationship between frequency and energy
higher frequency = higher energy
relationship between frequency and wavelength
high frequency = short wavelength
photon
bundle of energy
number of energy to frequency
Planck’s constant
electron goes from ground to excited state in ___ spectrum
absorption
spectrum for prism with white light or rainbow is
continuous spectrum
color with longest wavelength
color with highest frequency
order of types of light of increasing energy and frequency
radio, microwave, infrared, visible, UV, x-ray, gamma