Planck - Study guides, Class notes & Summaries
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Chemistry Praxis Review Questions and Answers
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Schrodinger (1925) Continued upon Bohr's findings to determine where electrons are typically found. 
 
Heisenberg (1927) Created the heisenberg uncertainty principle because you never can predict where the electron is. (Breaking Bad) 
 
De Broglie (1924) Electrons act like waves around the atom. 
 
Niels Bohr (Bohrbit) (1913) Electrons can orbit the nucleus in certain special orbits at different energy levels around the nucleus. 
 
Earnest Rutherford (foil) (1910) Fired beam of alpha particles ...
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CLEP Chemistry Review Practice Questions 2024.
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CLEP Chemistry Review Practice Questions 2024. 
John Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. 
 
J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom 
 
Robert Millikan - correct answer Calculated ...
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Quantum Physics Study Guide
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Quantum Physics Study Guide 
There have been two models of light. What are they and who first supported each? Particle: Newton 
and wave: Huygens (1600s) 
What determines the color with which a body glows? temperature 
What is Planck's equation? E=hf 
What does Planck's equation mean? Energy comes in discrete packets. Energy of a photon is 
proportional to its frequency. 
What does Planck's equation explain? Blackbody radiation problem and the photoelectric effect 
What is Planc...
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A-level Physics data and formulae
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For use in exams from the June 2017 Series onwards 
 
DATA - FUNDAMENTAL CONSTANTS AND VALUES 
Quantity speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron the Planck constant 
gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) 
magnitude of electron charge/mass ratio proton rest mass 
(equivalent to 1.00728 ...
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PSC 1121 Exam 3 || A+ Guaranteed.
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Kinetic energies correct answers The__________________________ __________________________ of molecules in the gas have a huge range from slow to fast. 
 
absolute correct answers The average Kinetic Energy is proportional to the ___________________________ temperature. 
 
gas correct answers A ______is considered to be a collection of molecules that are very spread out. 
 
vary correct answers The molecules in a gas has speeds that ______. 
 
yes correct answers Are both the Kelvin scale and the...
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CLEP Chemistry questions well answwred graded A+ 2023
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CLEP ChemistryJohn Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. 
 
J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom 
 
Robert Millikan - correct answer Calculated the charge-to-mass ratio of electr...
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DAT General Chemistry Latest Update Graded A+
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DAT General Chemistry Latest Update Graded A+ Atomic Number number of protons found in that atom; low number; (Z) 
Mass Number Protons + Neutrons; high number; (A) 
Atomic Mass relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 
1 amu = 1.66x10^-24 
Atomic Weight weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, weighted according to the natural abundance of t...
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A-level Physics data and formulae
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A-level Physics data and formulae 
 
For use in exams from the June 2017 Series onwards 
 
DATA - FUNDAMENTAL CONSTANTS AND VALUES 
Quantity speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron the Planck constant 
gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) 
magnitude of electron charge/mass ratio prot...
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DAT General Chemistry Exam |170|questions with complete solution
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DAT General Chemistry Exam |170|questions with complete solution 
Atomic Number ANS-number of protons found in that atom; low number; (Z) 
 
Mass Number ANS-Protons + Neutrons; high number; (A) 
 
Atomic Mass ANS-relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 
 
1 amu = ANS-1.66x10^-24 
 
Atomic Weight ANS-weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, ...
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AS Physics data and formulae
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AS Physics data and formulae 
 
 
For use in exams from the June 2016 Series onwards 
DATA - FUNDAMENTAL CONSTANTS AND VALUES 
 
 
 
speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron 
the Planck constant gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant 
electron rest mass 
 

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