Avogadro Study guides, Class notes & Summaries
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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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AQA AS level Chemistry exam 2024 questions with 100% correct answers
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
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 nu...
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AQA AS level Chemistry exam 2024 questions with 100% correct answers
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
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 nu...
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A-level Physics data and formulae
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Quantity speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron the Planck constant 
gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) 
magnitude of electron charge/mass ratio proton rest mass 
(equivalent to 1.00728 u) 
 
proton charge/mass ratio 
 
neutron rest mass (equivalent to 1.00867 u) 
gravitational fi...
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AQA A LEVEL Chemistry Exam 2023	
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AQA A LEVEL Chemistry Exam 2023	 
 
Relative atomic mass - correct answer The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 
 
Relative molecular mass - correct answer Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom 
 
The Avogadro constant - correct answer the number of particles in a mole 
 
ideal gas equation - correct answer pV = nRT 
 
empirical formula - correct answer the simplest whole number ratio of atoms of...
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BMAT – Chemistry Final Exam Questions and 100% Correct Answers
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what happens to the solubility of gases as pressure increases? increases 
what happens to the solubility of gases as temperature increases? decreases 
how is the chromatography retardation factor calculated? distance moved by compound/distance moved by solvent 
how is the relative atomic mass of an element calculated? (mass1 x abundance1) + (mass2 x abundance2)/ 100 
what are the elements in group 1 referred to as? alkali metals 
what are the elements in group 7 referred to as? halogens 
what ar...
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general chem 102 Exam Questions and Answers
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High IMF - ANSWER-high boiling point; low vapor pressure; high boiling point; high viscosity 
 
going from solid to gas - ANSWER-( - ) enthalpy; temperature of surrounding system increases 
 
going from gas to solid - ANSWER-( + ) enthalpy; temperature of surrounding system decreases 
 
Avogadro number - ANSWER-6.022 x 10^23 
 
Molarity - ANSWER-mol/L 
 
Molality - ANSWER-mol (solute) / Kg (solution) 
 
density - ANSWER-grams/L 
 
n= - ANSWER-level; ex: 3p, n=3 
 
ℓ = - ANSWER-n-1 
 
Mℓ - AN...
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OCR A-LEVEL CHEMISTRY MODULE 2 | Questions and Answers with complete solution
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ISOTOPES - ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS 
ATOMIC (PROTON) NUMBER - NUMBER OF PROTONS IN THE NUCLEUS 
MASS (NUCLEON) NUMBER - NUMBER OF PARTICLES (PROTONS & NEUTRONS) IN THE NUCLEUS 
ION - A POSITIVELY OR NEGATIVELY CHARGED ATOM OR (COVALENTLY BONDED) GROUP OF ATOMS 
RELATIVE ISOTOPIC MASS - THE MASS OF AN ISOTOPE COMPARED WITH ON TWELTH OF THE MASS 
OF AN ATOM OFCARBON 12 
RELATIVE ATOMIC MASS - THE WEIGHTED MEAN MASS OF AN ATOM OF AN ELEMENT COMPARED 
WITH ONE TWE...
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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
- Exam (elaborations) • 17 pages • 2024
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
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 nu...
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