Avogadro constant Study guides, Class notes & Summaries
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A Level Physics AQA Definitions
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absolute zero 
Lowest possible temperature, 0K, object has minimum internal energy. 
 
 
 
acceleration 
Change of velocity per unit time. 
 
 
 
 
 
 
00:31 
 
01:24 
activity of radioactive isotope 
Number of nuclei of the isotope that disintegrate per second. 
 
 
 
Becquerel (Bq) 
Unit of radioactive activity, 1Bq = 1 disintegration per second. 
 
 
 
amplitude 
Maximum displacement from equilibrium of oscillating object. 
 
 
 
angular displacement 
Angle an object in circular motion turns ...
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Chemistry AQA AS 2023 Exam Questions And Answers
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Chemistry AQA AS 2023 Exam Questions And Answers 
 
Absolute temperature - ANSWER Temperature measured in Kelvin 
 
Absolute zero - ANSWER The lowest possible temperature theoretically achieveable -273.15 degrees celius or zero Kelvin 
 
Acceleration - ANSWER The stage in mass spectrometry where positive ions are speeded up by an electric field 
 
Acid rain - ANSWER Rain that has been acidified by pollutants such as sulfur dioxide 
 
Actual yield - ANSWER Mass of produc...
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT 
ANSWERS 
Absolute temperature - ANSWERS Temperature measured in Kelvin 
Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 
273.15 degrees celius or zero Kelvin 
Acceleration - ANSWERS The stage in mass spectrometry where positive ions are 
speeded up by an electric field 
Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide 
Actual yield - ANSWERS Mass of product obtained in a ...
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Chemistry Class Notes with John D. Mays "General Chemistry" textbook ISBN: 9780988322868
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Handwritten notes from a High School chemistry class throughout the whole year. These notes cover the basics of chemistry from basic measurements to balancing equations. These notes were taken in conjunction with the textbook "General Chemistry" by John D. Mays. Chapters 1-3, 5, 6, 9, and 11 are covered. 
Chapter 1: basic measurements and units 
Chapter 2: atoms and substances, Avogadro's constant, and molar mass 
Chapter 3: atomic structure 
Chapter 5: ionic vs covalent bonds, the octe...
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A-level Chemistry Definitions 100% Pass
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A-level Chemistry Definitions 100% Pass isotopes atoms of the same element with different numbers of neutrons 
atomic (proton) number the number of protons in the nucleus of an atom 
mass (nucleon) number the number of particles (protons and neutrons) in the nucleus 
ion a positively or negatively charged atom or (covalently bonded) group of atoms (molecular ion) 
relative isotopic mass the mass of an atom of an isotope compared with one twelfth of the mass of an atom of carbon-12 
relative atom...
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS
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Absolute temperature - ANSWERS Temperature measured in Kelvin 
Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 
273.15 degrees celius or zero Kelvin 
Acceleration - ANSWERS The stage in mass spectrometry where positive ions are 
speeded up by an electric field 
Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide 
Actual yield - ANSWERS Mass of product obtained in a reaction 
Addition polymer - ANSWERS Polymer formed when many...
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EDEXCEL CHEMISTRY PAPER 2 Practice Question Guide.
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Proton c/m? - correct answer +1, 1 
 
Neutron c/m? - correct answer 0, 1 
 
Electron c/m? - correct answer -1, 1/1500 
 
Mass number? - correct answer Num of protons + neutrons 
 
Atomic number? - correct answer Num protons 
 
Isotope? - correct answer Different atom of the same element, same num protons. 
Diff ...
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AQA AS level Chemistry exam 2024 questions with 100% correct answers
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Nucleons - ANSWERS Protons and neutrons 
Electrons (location) - ANSWERS Surrounding the nucleus 
Relative mass of an electron - ANSWERS 1/1840 
Strong nuclear force - ANSWERS The way protons and neutrons are held together in 
the nucleus 
Electrostatic forces - ANSWERS The attraction between protons and electrons that 
hold them together in the atom 
Atomic Number (Z) - ANSWERS The number of protons in the nucleus 
Mass number (A) - ANSWERS The total number of protons and neutrons in the 
nuc...
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A-Level Chemistry Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2023 with Marking scheme attached.
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AQA 
A-Level Chemistry Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2023 with Marking scheme attached. 
 
Name …………………………………………………………………… 
Date ………………… 
 
 
2 hours allowed 
You should have access to the AQA insert (periodic table and data sheet) to help with answering the questions. 
 
 
 
Grade boundaries 
These are VERY rough guesses! Getting a C on this paper does not guarantee you the same mark in the exam. 
 ...
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AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Question Paper + Mark scheme [MERGED] June 2022 *jUN2284621H01* IB/M/Jun22/E10 8462/1H For Examiner’s Use Question Mark 1 2
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AQA 
GCSE 
CHEMISTRY 
8462/1H 
Paper 1 Higher Tier 
Question Paper + Mark scheme [MERGED] 
June 2022 
*jUNH01* 
IB/M/Jun22/E10 8462/1H 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
TOTAL 
 
 Time allowed: 1 hour 45 minutes 
Materials 
For this paper you must have: 
• a ruler 
• a scientific calculator 
• the periodic table (enclosed). 
Instructions 
• Use black ink or black ball-point pen. 
• Pencil should only be used for drawing. 
• Fill in the boxes at the top of ...
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