Acceleration of electrons - Study guides, Class notes & Summaries
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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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AS-level AQA Chemistry questions and answers
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AS-level AQA Chemistry questions and 
answers 
What is the charge of a proton? - ANSWERS +1 
What is the charge of a neutron? - ANSWERS 0 
What is the charge of an electron? - ANSWERS -1 
What is the mass of a proton? - ANSWERS 1 
What is the mass of a neutron? - ANSWERS 1 
What is the mass of an electron? - ANSWERS 1/1800 
What is an isotope? - ANSWERS Isotopes of an element are atoms with the same 
number of protons but different numbers of neutrons. 
Why do isotopes of an element all have t...
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AQA Physics AS Glossary Exam Questions and Answers 100% Pass
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AQA Physics AS Glossary Exam Questions and Answers 100% Pass 
Antineutrino 
The antiparticle of a neutrino. 
 
 
Brittle fracture 
When a stress applied to a brittle material causes tiny cracks at the material's surface to get bigger until the material breaks completely. 
 
 
Absolute refractive index 
The ratio between the speed of light in a vacuum and the speed of light in a material. 
 
 
Antineutron 
The antiparticle of a neutron. 
 
 
Antinode 
A point of maximum amplitude on a stationary...
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CT BOOT CAMP CT Image Production (2022/2023) Already Passed
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CT BOOT CAMP CT Image Production (2022/2023) Already Passed 
If the rotation time of a scan is decreased, what other exposure parameter should be changed to maintain the image quality? A. Increase millimaperage (mA) B. Increased kilovoltage peak (kVp) C. Decrease scan length D. Decrease milliamperage (mA) A. Increase millimaperage (mA) 
What technical change is expected to increase the penetrating ability of an x-ray beam? A. Increase kilovoltage peak (kVp) B. Increased milliamperage (mA) C. Inc...
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AS Level Chemistry Review Questions and Expert Solutions
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Atomic number Number of protons in an element 
Mass number Number of protons and neutrons 
Ion Electrically charged particle formed by the loss/gain of electrons 
Relative masses of P,N and E 1,1, 1/2000 (respectively) 
Isotopes Atoms of the same element with different number of neutrons but same 
number of protons. 
What are steps of mass spectroscopy? Ionisation, Acceleration, Deflection, 
Detecting 
Ionisation A gaseous sample is bombarded with high energy electrons to create 1+ 
ions
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AS Level Chemistry 1 Questions with Correct Answers
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▪ Atomic number - Ans .Number of protons in an element 
▪ Mass number - Ans .Number of protons and neutrons 
▪ Ion - Ans .Electrically charged particle formed by the loss/gain of electrons 
▪ Relative masses of P,N and E - Ans .1,1, 1/2000 (respectively) 
▪ Isotopes - Ans .Atoms of the same element with different number of neutrons but same 
number of protons. 
▪ What are steps of mass spectroscopy? - Ans .Ionisation, Acceleration, Deflection, Detecting 
▪ Ionisation - Ans .A gase...
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AQA A LEVEL CHEMISTRY PAPER 1 EXAM QUESTIONS AND ANSWERS
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AQA A LEVEL CHEMISTRY PAPER 1 EXAM QUESTIONS AND ANSWERS 
 
TOF steps - ANS 1) ionization 
2) acceleration 
3) ion drift 
4) detection 
5) analysis 
 
Electron impact - ANS Sample vaporize and electron gun fires high energy electrons at it which knock off 1 electron from each particle, making them 1+ ions 
NB- can knock off more than one e or break molecular ion 
 
electrospray ionization - ANS Sample dissolved in volatile solvent then injected through needle to give fine mist which i...
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AQA A-level CHEMISTRY 7405/1 AQA- A LEVEL CHEMISTRY PAPER 1 COMPILED WITH QUESTIONS AND ANSWERS UPDATED 2024 FOR REVIEW EXAM 100% A+
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TOF steps - CORRECT ANSWER-1) ionisation 
2) acceleration 
3) ion drift 
4) detection 
5) analysis 
 
Electron impact - CORRECT ANSWER-Sample vaporised and electron gun fires high energy electrons at it which knock off 1 electron from each particle, making them 1+ ions 
NB- can knock off more than one e or break molecular ion 
 
electrospray ionization - CORRECT ANSWER-Sample dissolved in volatile solvent then injected through needle to give fine mist which is attached to positive end of high v...
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2024 Radiology VTNE Review Question Latest Questions With Complete Grade A Answers
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2024 Radiology VTNE Review Question 
Latest Questions With Complete Grade A Answers 
 
1. Aluminum filters remove what part of the x-ray beam 
Answer: Low energy 
2. What is the sensitive chemical impregnated into an x-ray film? 
Answer: Silver halide 
3. Which of the following is physical property of x-rays? 
A. travel in straight lines. 
B.retracted reflectsimilar to visible light 
C. are visible in the dark 
D.maydeflect by magnets 
Answer: Travel in straight lines 
4. As the wavelength of x...
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A Level Physical Chemistry AQA questions and answers 100% verified.
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A Level Physical Chemistry AQA questions and answers 100% verified. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1 - ANS.relative mass of a proton 
 
1 - ANS.relative mass of a neutron 
 
1/1840 - ANS.relative mass of an electron 
 
+1 - ANS.relative charge of a proton 
 
0 - ANS.relative charge of a neutron 
 
-1 - ANS.Relative charge of an electron 
 
strong nuclear force - ANS.How is the nucleus held together 
 
nuclear force - ANS.is the nuclear force or electrostatic force stronge...
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