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Chem 2

Alpha Partical Subtracts
Beta Partical Adds
Second Law of Thermodynamics In spontaneous process there is an increase in the entropy of the universe
Third Law of Thermodynamics The entropy of a perfect crystal at 0
Electrolysis Forcing a current through a cell to drive a non spontaneous reaction to occur
Irreversible Process System must take another path to return to its natural state
Gibbs Free Energy Change G= Change H- (T) Change S and Change G= Change G final- Change G Initial
Electrochemistry Study of relationships between electricity and chemical reactions
Oxidation Loss of electrons
Reduction Gain of electrons
Voltaic Cell Use of electricity from spontaneous redox reaction to generate electricity by transfer of electron through external pathway
Anode Oxidation
Cathode Reduction
Ecell Ecell= Cathode- Anode
Salt Bridge Allows for passage on ions to maintain electrical neutrality
Cell Potential Driving force for electron flow also EMF or Electromotive Force
Battery Voltaic cell or series of voltaic cells
Fuel Cells Voltaic cell with constant potential because reactants are constantly added
Corrosion Natural occurring oxidation of metals
Nucleons Subatomic particles
Atomic Number Protons
Mass Numbers Sum of protons and neutrons in a nuclide
Isotope Atom with a particular number of neutrons in a nucleus
Radioactivity Decay of an unstable nucleus by emission of particles and/or electromagnetic radiation
Positron Has electron in the equation
Spontaneous Process Occurs without outside intervention
First Law of Thermodynamics Law of Conservation of Energy
Enthalpy Change in H
Exothermic H is more than 0
Endothermic H is less than 0
Reversible Process Change to system is made in such a way that the system can be restored to original state by exactly reversing the change
Entropy Change in S
Fission Splitting of heavy nuclei
Fusion Combining of lighter nuclei into heavier nuclei
Created by: CTDUBS



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