Chemistry definition - Study guides, Class notes & Summaries
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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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OCR A level Chemistry Definitions Exam With 100% Correct Answers
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OCR A level Chemistry Definitions Exam With 100% Correct Answers 
Activation Energy - Correct Answer The minimum energy required to start a reaction by breaking bonds in the reactants 
 
Addition Polymer - Correct Answer A very long molecular chain formed by repeated addition reactions of many unsaturated alkene molecules 
 
Addition Reaction - Correct Answer A reaction in which a reactant is added to an unsaturated molecule to make a saturated molecule 
 
Acid Dissociation Constant - Corre...
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Chemistry definitions Acids and Bases rated A+ 2023/2024
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Chemistry definitions Acids and Basesconcentration - correct answer concentration is the abundance of a constituent divided by the total volume of a mixture. 
 
equilibrium - correct answer There is equilibrium when the concentrations of reactants and products are in an unchanging ratio. Kc=[C]c[D]d/[A]a[B]b 
 
molarity - correct answer The number of moles of solute (the material dissolved) per liter of solution. 
 
pH - correct answer pH is a numeric scale used to specify the acidity or basicit...
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OCR A level Chemistry definitions | Questions and Answers with complete solution
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Relative isotopic mass - The mass of an isotope relative to 1/12 of the mass of a carbon-12 atom. 
Relative atomic mass Ar - The weighted mean mass of an atom of an element relative to 1/12 of the 
mass of a carbon-12 atom. 
Weighted: The percentage abundance of the isotopes of that element 
Mean: The relative isotopic mass of each isotope 
What is a mole? - The amount of substance containing as many particles as there are atoms in 12g of 
the carbon-12 isotope. This is 6.02 x 10^23 particles. 
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TEST BANK FOR TIETZ FUNDAMENTALS OF CLINICAL CHEMISTRY AND MOLECULAR DIAGNOSTICS 7TH EDITION BY BURTIS
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TEST BANK FOR TIETZ FUNDAMENTALS OF CLINICAL CHEMISTRY AND MOLECULAR DIAGNOSTICS 7TH EDITION BY BURTIS 
Table of Contents PREFACE ............................................................................................................................................... 2 Chapter 01: Clinical Chemistry, Molecular Diagnostics, and Laboratory Medicine ...................... 2 Chapter 02: Selection and Analytical Evaluation of Methods With Statistical Techniques .......... 5 Chapter 03: Clinical...
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OCR AS Level Chemistry Definitions 2024
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OCR AS Level Chemistry Definitions 2024 
Relative Atomic Mass 
The weighted mean mass of an atom of an element relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Relative Molecular Mass 
The mass of a molecule of a compound relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Water of Crystallisation 
The water molecules that make up part of the crystal structure of a solid.
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OCR AS Level Chemistry Definitions 2024
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OCR AS Level Chemistry Definitions 2024 
Relative Atomic Mass 
The weighted mean mass of an atom of an element relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Relative Molecular Mass 
The mass of a molecule of a compound relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Water of Crystallisation 
The water molecules that make up part of the crystal structure of a solid.
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OCR AS Level Chemistry Definitions 2024
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OCR AS Level Chemistry Definitions 2024 
Relative Atomic Mass 
The weighted mean mass of an atom of an element relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Relative Molecular Mass 
The mass of a molecule of a compound relative to 1/12th the mass of an atom of Carbon-12. 
 
 
 
Water of Crystallisation 
The water molecules that make up part of the crystal structure of a solid.
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Honors Chemistry Chapters 1-3 Exam Questions And Answers 2024 Tests
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Honors Chemistry Chapters 1-3 Exam Questions And Answers 2024 Tests 
What is the definition of chemistry? ANS The study of the properties and transformations of matter 
 
What is the definition of matter? ANS Anything that has mass and occupies space-- things you can see, touch, taste, or smell 
 
What is the definition of a property? ANS A characteristic that can be used to describe a substance. Substances have both physical and chemical properties 
 
What is the definition of a transformati...
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OCR A LEVEL CHEMISTRY DEFINITIONS 2023- 2024 EXAM [ALREADY GRADED A+] WITH CORRECT DETAILED
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OCR A LEVEL CHEMISTRY DEFINITIONS 
EXAM [ALREADY GRADED A+] WITH CORRECT 
DETAILED 
 
 
 
Amphoteric chemicals - ANSWER-Chemicals that can react with both acids and 
bases 
 
Anion - ANSWER-A negatively charged ion 
 
Anhydrous - ANSWER-A substance that contains no water molecules 
 
Arrhenius plot - ANSWER-A graph of lnK = lnA - Ea/R x 1/T 
 
Atomic Orbital - ANSWER-A region of space where you will likely find electrons. 
Each orbital can hold 2 electrons, with opposite spins ...
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