The bohr model Guías de estudio, Notas de estudios & Resúmenes
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![TEST BANK FOR RADIOLOGIC SCIENCE FOR TECHNOLOGISTS 11TH EDITION BY BUSHONG](/docpics/628b8e00438da_1611328.jpg)
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TEST BANK FOR RADIOLOGIC SCIENCE FOR TECHNOLOGISTS 11TH EDITION BY BUSHONG
- Examen • 299 páginas • 2022
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MULTIPLE CHOICE 
 
 1. The term “atom” was first used by the ___________. 
a. Ethiopians 
b. British 
c. Greeks 
d. Romans 
 
 
ANS: C 
The term “atom” was first used by the Greeks 
 
DIF: Moderate REF: p. 27 
OBJ: Relate the history of the term “atom.” 
 
 2. The first person to describe an element as being composed of identical atoms was 
__________. 
a. J. J. Thomson 
b. John Dalton 
c. Dmitri Mendeleev 
d. Niels Bohr 
 
 
ANS: B 
The first person to describe an ele...
![AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified](/docpics/5215038/6639c1c104680_5215038_121_171.jpeg)
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
- Examen • 23 páginas • 2024
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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 
...
![AQA AS Physical Chemistry 2024 exam questions with 100% correct answers](/docpics/5223715/663a8c0c0f425_5223715_121_171.jpeg)
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AQA AS Physical Chemistry 2024 exam questions with 100% correct answers
- Examen • 16 páginas • 2024
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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...
![CLEP Chemistry questions well answwred graded A+ 2023](/docpics/3476091/650c48ebe9e44_3476091_121_171.jpeg)
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CLEP Chemistry questions well answwred graded A+ 2023
- Examen • 15 páginas • 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...
![CHEM 305 Chapter 4 Exam Questions And Answers 2024](/docpics/4978819/661836d07107c_4978819_121_171.jpeg)
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CHEM 305 Chapter 4 Exam Questions And Answers 2024
- Examen • 10 páginas • 2024
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CHEM 305 Chapter 4 Exam Questions And Answers 2024 
1. Light - ANS-a form of electromagnetic radiation which is a type of energy that travels through 
space in a constant speed and wave pattern 
2. Waves with shorter wavelengths - ANS-have high energy and high frequency 
3. waves with long wavelengths - ANS-have low energy and low frequency 
4. waves with high energy - ANS-have short wavelengths and high frequency 
5. waves with low energy - ANS-have long wavelengths and low frequency 
6. what ...
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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/5286025/6642175adc2ee_5286025_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...
![AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified](/docpics/5223576/663a893e1666e_5223576_121_171.jpeg)
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
- Examen • 23 páginas • 2024
- Disponible en paquete
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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 
...
![AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified](/docpics/5234899/663bc77f972b3_5234899_121_171.jpeg)
-
AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
- Examen • 23 páginas • 2024
- Disponible en paquete
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- $14.99
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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 
...
![CHEM 103: ATOMIC STRUCTURE>notes and problem set module 4.](/docpics/2853690/647d8d2779370_2853690_121_171.jpeg)
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CHEM 103: ATOMIC STRUCTURE>notes and problem set module 4.
- Otro • 21 páginas • 2023
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4.1: ATOMIC STRUCTURE 
Earlier in this course, we explored a very elementary view of atomic structure. We 
learned about protons, neutrons, and electrons (the three elementary particles that 
comprise an atom) and their properties. In this module, we will study these particles in 
detail and learn how their presence and arrangement determines the properties of all 
matter. 
The Electron 
During the 1800s, a number of scientists, including Sir Humphrey Davy, Michael Faraday, 
R. A. Milligan, G. J...
![Nuclear Medicine Physics question and answers rated A+ 2023 passed](/docpics/3127752/64bfd4b7c7971_3127752_121_171.jpeg)
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Nuclear Medicine Physics question and answers rated A+ 2023 passed
- Examen • 8 páginas • 2023
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Nuclear Medicine Physics question and answers rated A+ 2023 passedBinding energy - correct answer min amount of energy required to "free" and electron from an atom. 
 
Unstable vs stable - correct answer stable-non radioactive 
unstable- radioactive 
 
Ionization - correct answer removal of an ELECTRON from an atom 
 
Excitation - correct answer electron absorbs enough energy to make it move to an UNOCCUPIED shell 
 
Strong nuclear force - correct answer energy used to hold particles inside th...
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