Rutherford model Study guides, Class notes & Summaries
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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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LRA 211 Certification Exam Questions and CORRECT Answers
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Joseph (JJ) Thomson - Developed "plum pudding model" 
Interactions in x-ray tube - Happen at atomic level 
Ernest Rutherford - Model resembling tiny solar system 
Niels Bohr - Atoms have 3 particles Protons, Neutrons, and electrons 
binding energy - Energy needed to split up and atom 
Electron binding energy depends on - How close the electron is to the nucleus and how 
many protons are in the atom
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AQA AS Physical Chemistry 2024 exam questions with 100% correct answers
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AQA AS Physical Chemistry 2024 exam 
questions with 100% correct answers 
Who described atoms as solid spheres that make up different elements and when? - 
ANSWERS John Dalton in the 19th century 
Who suggested that atoms of a particular element had the same mass and atoms of 
different elements had different masses and when? - ANSWERS John Dalton in 1803 
Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered 
electrons proving atoms weren't indivisible or solid. 
New m...
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MTTC integrated Sciences 094 physical sciences Correct 100%
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Plasma - ANSWER ionized gas that has some electrons that are described as free because they are not bound to an atom or molecule 
 
specific gravity - ANSWER measurement of the density of substances in a liquid compared to water 
 
atomic theory - ANSWER a theory that states that all matter is composed of tiny particles called atoms. 
 
John Dalton - ANSWER developed modern atomic theory 
 
negative ion - ANSWER anion, gains electrons 
 
positive ion - ANSWER cation; loses electrons 
 
ionic bon...
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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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A-Level OCR Chemistry Salters B - Elements For Life exam 2023 with 100% correct answers
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What is the peak called on mass spec? correct answersMolecular ion 
 
How do you calculate relative atomic mass? correct answers(mass no x abundance%) + (mass no x abundance%) / 100 
 
What is nuclear fusion? correct answersWhen 2 light atomic nuclei fuse together to form a heavier nucleus of a new element. 
 
What did John Dalton discover? correct answersFound atoms are solid spheres made of tiny particles. 
 
What did J.J Thompson discover? correct answersThe plum pudding model: ball of positi...
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CEM 141 MSU Exam 1 Questions and Answers(A+ Solution guide)
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The statement "If I add cold milk to hot coffee the temperature will decrease," is a? - Claim, 
always include an explanation and reasoning to the claim. 
Scientific Model - Models are used to make testable predictions 
How much is a picometer? - 0.1 x 10^-12 meters 
Atomic Force Microscopy/ Scanning Tunneling Microscopy - Microscopes that now allows us to 
view atoms. 
Leaves are green in the summer because? - A plant's leaves are green in the summer because 
they contain chlorophyll. Chloro...
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Straighterline CHEM101 Final Exam| 314 Questions| Correct Answers| Verified!!
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Mass Number - ANSWERStotal number of neutrons and protons in an atom; # protons + # electrons 
 
p - ANSWERSMost nonmetallic elements are found in which block of the periodic table? 
 
Positive matter is concentrated in the central core - ANSWERSErnest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... 
 
Potassium - ANSWERSPlants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? 
 
2:1:1:2 - ANSWERSWhat is the r...
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Straighterline CHEM101 Final Exam Graded A+
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Mass Number - ANSWER-total number of neutrons and protons in an atom; # protons + # electrons 
 
p - ANSWER-Most nonmetallic elements are found in which block of the periodic table? 
 
Positive matter is concentrated in the central core - ANSWER-Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... 
 
Potassium - ANSWER-Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? 
 
2:1:1:2 - ANSWER-What is the r...
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Straighterline CHEM101 Final Graded A+
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Straighterline CHEM101 Final Graded A+ 
Mass Number ️total number of neutrons and protons in an atom; # protons + # electrons 
p ️Most nonmetallic elements are found in which block of the periodic table? 
Positive matter is concentrated in the central core ️Ernest Rutherford disproved J.J. Thomson's plum 
pudding model of the atom by showing that... 
Potassium ️Plants use up copious amounts of which alkali metal, preventing most of it from being 
washed out to sea? 
2:1:1:2 ️Wha...
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