Bohr model Study guides, Class notes & Summaries
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Nuclear Medicine Physics Questions & Answers(RATED A)
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Binding energy -ANSWER min amount of energy required to "free" and electron from an atom. 
 
Unstable vs stable -ANSWER stable-non radioactive 
unstable- radioactive 
 
Ionization -ANSWER removal of an ELECTRON from an atom 
 
Excitation -ANSWER electron absorbs enough energy to make it move to an UNOCCUPIED shell 
 
Strong nuclear force -ANSWER energy used to hold particles inside the nucleus 
 
Electromagnetic nuclear force -ANSWER energy used to have atoms interact with other molecules 
 
W...
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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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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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GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED
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GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY 
PAPER 2 2024/2025 QUESTION PAPER ALREADY 
PASSED 
What does 'aq' mean? - answer Aqueous - it is dissolved in water 
Water - formula - answer H20 
Ammonia - formula - answer NH3 
Carbon Dioxide - formula - answer CO2 
Hydrogen - formula - answer H2 
Chlorine - formula - answer Cl2 
Oxygen - formula - answer O2 
Ammonium (ion) - formula - answer NH4 (+) 
Hydroxide (ion) - formula - answer OH (-) 
Nitrate (ion) - formula - answer NO3 (-) 
Carbonate (ion) -...
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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 - Exam 2 Questions And Answers Rated A+ New Update Assured Satisfaction
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mole - 6.022 x 10^23 things 
number of particles that allows us to convert from the molecular to the macroscopic level 
limiting reactant/reagent - amount of one of the reactants which limits how much product can be 
formed. smallest amount. 
percent yield - actual/theoretical x 100 
electromagnetic radiation - 
wavelength - The distance between two corresponding parts of a wave. seconds/wave. 
1/frequency. measured in m 
amplitude - Height of a wave 
frequency - waves/second. 1/wavelength. meas...
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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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AQA GCSE Chemistry Paper 1 2023 Exam Questions With Complete Solutions
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AQA GCSE Chemistry Paper 1 2023 Exam Questions With Complete Solutions 
What is an atom? - ANSWER Smallest part of an element that can exist 
 
What is an element? - ANSWER A substance made up of one type of atom 
 
How are elements represented? - ANSWER Using symbols, in the periodic table 
 
Approximately how many elements are there? - ANSWER 100 
 
What is a compound? - ANSWER A substance made up of two or more elements chemically c...
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ASTR Exam 2024 with 100% correct answers
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On oct 14, NYC will see the sun eclipsed about ____ % _____ than Burlington - correct answer 6, more 
 
Because of the moons eccentric orbit, the maximum change in its apparent diameter is closest to ____ % - correct answer 10 
 
The sun usually looks redder at sunset than at midday because ____ - correct answer you're looking through a longer path of atmosphere at sunset than at midday 
 
Annular solar eclipses cannot be seen - correct answer when the moon is near its perigee 
 
On average, th...
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chem 141 exam 2 MSU Questions with 100% Correct Answers | Verified
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Describe the relationship between the frequency, wavelength, and velocity (speed) of a wave. - AnswerThe more times the wave is passing through a point in space = a higher frequency, the higher frequency 
creates a smaller wavelength, which is why the smallest wave is a gamma wave, it has the highest 
frequency and the shortest distance between waves, the velocity can be measured in m/s and is 
composed of frequency and wavelength 
Calculate any one (frequency, wavelength, or velocity) given the...
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