The bohr model Guías de estudio, Notas de estudios & Resúmenes
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![OCR 2023 GCSE Combined Science Physics A Gateway Science J250/11: Paper 11 (Higher Tier) Question Paper & Mark Scheme (Merged)](/docpics/5250951/663d8b681779f_5250951_121_171.jpeg)
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OCR 2023 GCSE Combined Science Physics A Gateway Science J250/11: Paper 11 (Higher Tier) Question Paper & Mark Scheme (Merged)
- Examen • 47 páginas • 2024
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2 
© OCR 2023 
Section A 
You should spend a maximum of 20 minutes on this section. 
Write your answer to each question in the box provided. 
1 Which new feature of the atomic model did Niels Bohr suggest? 
A Electrons are in stable shells. 
B Electrons orbit a nucleus. 
C The atom has a nucleus. 
D The nucleus is positive. 
Your answer [1] 
2 Two rooms have the same fixed volume. They contain identical gases at the same pressure. 
Room H is at a higher temperature than room L. 
Which statement...
![chem 141 exam 2 MSU Questions with 100% Correct Answers | Verified](/docpics/5103366/662a411eecadd_5103366_121_171.jpeg)
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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...
![Chemistry Regents Review](/docpics/5452962/6654b1933c075_5452962_121_171.jpeg)
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Chemistry Regents Review
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Chemistry Regents Review 
 
What was the first subatomic particle discovered? - The electron 
 
Ionic bonding is between a.. - metal and non metal 
 
The transfer of electrons from one atom to another is called - ionic bonding 
 
Which atoms are diatomic - BrINClHOF 
 
A gas is most ideal at what - low pressure and high temperature 
 
Partial charges are used in which type of bonding - ionic 
 
Which three things does hydrogen bond to - FON 
 
Lose Electrons- - Oxidation 
 
Gain Electrons- - Red...
![ASTR Exam 2024 with 100% correct answers](/docpics/4844150/660340f72fde6_4844150_121_171.jpeg)
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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...
![STAAR Review 8th grade Science questions fully solved & updated 2024](/docpics/4544029/65d38c793305c_4544029_121_171.jpeg)
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STAAR Review 8th grade Science questions fully solved & updated 2024
- Examen • 22 páginas • 2024
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Atom 
the basic building block of matter that make up everyday objects 
 
 
 
Nucleus (atom) 
the center of an atom that contains the protons and neutrons 
 
 
 
 
Brainpower 
Read More 
Previous 
Play 
Next 
Rewind 10 seconds 
Move forward 10 seconds 
Unmute 
0:02 
/ 
0:15 
Full screen 
Electron Cloud 
the area around the nucleus of an atom where electrons are found 
 
 
 
Protons 
positive charged subatomic particles found in the nucleus 
 
 
 
Neutrons 
neutral charged subatomic particles fou...
![A-Level OCR Chemistry Salters B - Elements For Life exam 2023 with 100% correct answers](/docpics/3476907/650c6a0292213_3476907_121_171.jpeg)
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A-Level OCR Chemistry Salters B - Elements For Life exam 2023 with 100% correct answers
- Examen • 8 páginas • 2023
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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...
![AQA GCSE Chemistry Paper 1: Introduction to Chemistry. Exam Questions with Complete Solutions 2024/2025](/docpics/5679358/6673825de7406_5679358_121_171.jpeg)
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AQA GCSE Chemistry Paper 1: Introduction to Chemistry. Exam Questions with Complete Solutions 2024/2025
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What is an atom? - Ans .Smallest part of an element that can exist 
▪ What is an element? - Ans .A substance made up of one type of atom 
▪ How are elements represented? - Ans .Using symbols, in the periodic table 
▪ Approximately how many elements are there? - Ans .100 
▪ What is a compound? - Ans .A substance made up of two or more elements chemically 
combined in fixed proportions 
▪ How are the elements in a compound separated? - Ans .By chemical reaction 
▪ How are chemical rea...
![CEM 141 Final Exam Questions & Answers Solved 100% Correct!!](/docpics/5103527/662a4550030ba_5103527_121_171.jpeg)
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CEM 141 Final Exam Questions & Answers Solved 100% Correct!!
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Why are alpha particles deflected by the nucleus? - Answer-Because both the alpha particles and the 
nucleus are positively charged and so the alpha particle is repelled. 
Is this statement (Dalton's Theory) true or false and why? 
"All atoms of an element are identical and have the same mass and properties." - Answer-False. 
Atoms of the same element can have different numbers of neutrons. 
What is the evidence that electrons are subatomic particles? - Answer-The nature of the electron is 
i...
![MTTC integrated Sciences 094 physical sciences graded A+](/docpics/5057273/66239f57c1264_5057273_121_171.jpeg)
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MTTC integrated Sciences 094 physical sciences graded A+
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MTTC integrated Sciences 094 physical sciences graded A+ 
Plasma ionized gas that has some electrons that are described as free because they are not bound to 
an atom or molecule 
specific gravity measurement of the density of substances in a liquid compared to water 
atomic theory a theory that states that all matter is composed of tiny particles called atoms. 
John Dalton developed modern atomic theory 
negative ion anion, gains electrons 
positive ion cation; loses electrons 
ionic bo...
![AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified](/docpics/5239518/663c640d8abc4_5239518_121_171.jpeg)
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and 
Physical Chemistry questions and answers verified 
What is the equation linking mass moles and MR? 
Mass=moles * MR 
What is the definition of Ar (relative atomic mass)? 
The average mass of an atom of an element compared to the mass of one twelfth of 
carbon 12. 
What does Mr stand for? 
Relative molecular mass 
Define relative isotopic mass. 
The mass of an isotope of an element compared to the mass of one twelfth of the mass 
of carbon 12 
...
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