Oxygen oxidation state - Usually -2, -1 in peroxides
oxidation, electrons appear on - product side of arrow. (-Cr-->Cr3+ + 3e-)
reduction, electrons appear on - reactant side of arrow
half reactions - the two parts of an oxidation-reduction reaction, one representing oxidation, the other
reduction
oxidizing agent - Accepts electrons and becomes reduced.
reducing agent - Donates electrons and becomes oxidized.
electrodes - pieces of metals where electrons are transferred
, anodes - Electrodes where oxidation occurs
cathodes - Negative electrodes where reduction occurs
percent error - the absolute value of the error divided by the accepted value, multiplied by 100%
precision average - average= sum of individual measurements/ number of measurements
accuracy is determined by - percent error
density - mass/volume
unit conversion method - given times conversion factor equals want
formula for water heat - mass x change in temp x 1.00 cal/g ^degree celcius
1 gram amu - 6.022 x 10^23
atomic number - number of protons
mass number - the sum of the number of neutrons and protons in an atomic nucleus
neutrons equal to - mass number - protons
mass number - protons + neutrons
isotopes - atoms with identical atomic numbers but different mass numbers
law of conservation of mass - Matter is not created nor destroyed in any chemical or physical change
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