Chemistry definitions - Study guides, Class notes & Summaries

A-level Chemistry Definitions questions and answers well illustrated. isotopes - ANS.atoms of the same element with different numbers of neutrons atomic (proton) number - ANS.the number of protons in the nucleus of an atom mass (nucleon) number - ANS.the number of particles (protons and neutrons) in the nucleus ion - ANS.a positively or negatively charged atom or (covalently bonded) group of atoms (molecular ion) relative isotopic mass - ...

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...

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.

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.

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.

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...

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...

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. ...

Previewed OCR AS Level Chemistry Definitions Isotope - CORRECT ANSWER-Atoms of an element with the same number of protons but different numbers of neutrons. Relative Isotopic Mass - CORRECT ANSWER-The mass of an atom of an isotope of an element relative to 1/12th the mass of an atom of Carbon-12. Relative Atomic Mass - CORRECT ANSWER-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 - CORRECT ANSWER-The mass of...

This aesthetic, in-depth, neatly typed document summarises Section C of the IEB Grade 12 Chemistry syllabus: Energy Change & Rates of Reactions. This document includes the full Section C syllabus, all definitions, additional class notes, own research notes and all relevant diagrams.