Chemistry definitions - Study guides, Class notes & Summaries

This aesthetic, neatly typed document contains all the IEB Grade 12 Chemistry SAG Definitions from each section: Quantitative Chemistry, Chemical bonding, Energy Change & Rates of Reactions, Chemical Equilibrium, Acids & Bases, Electrochemistry, and Organic Chemistry

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...

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...

A-LEVEL CHEMISTRY DEFINITIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

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 ...

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...

AQA A LEVEL CHEMISTRY DEFINITIONS MID-TERM EXAM Aliphatic Hydrocarbon - ANSWER-A hydrocarbon with carbon atoms joined together in straight or branched chains Alkali - ANSWER-A type of base that dissolves in water forming hydroxide ions Alkanes - ANSWER-The homologous series with the general formula CnH2n+2 Alkyl Group - ANSWER-An alkane with a hydrogen ion removed. Alkyl groups are often shown as 'R' Amount of Substance - ANSWER-The quantity whose unit is the...

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...