Year 12 Atoms and Reactions Chemistry Key Definitions 0.0 / 5 ? ChemistryReactionsASOCR Created by: Oliviali11yCreated on: 22-03-19 12:07 Relative Isotopic Mass Mass of an atom of an isotope comapred with one-twelfth of the mass of an atom of carbon-12 1 of 13 Relative Atomic Mass The weighted mean mass of an atom of an element comapred with one-twelfth of the mass of an atom of carbon-12 2 of 13 Amount of substance The quantity that has moles as its unit. Way of counting atoms 3 of 13 Mole Amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope 4 of 13 Avogadros Constant Number of atoms per mole of the carbon-12 isotope (6.02x10^23) 5 of 13 Molar Mass, M The mass per mole of substance. Units are gmol^-1. (Also known as the Mr) 6 of 13 Molar Gas Volume The volume per mole of a gas. The units of molar volume are dm^3mol^-1. At RTP, the molar volume is approximately 24.0 dm^3mol^-1 7 of 13 Concentration The amount of solute, in mol, disollved per 1dm^3 of solution 8 of 13 Standard Solution A solution of known concentration. Normally used in titrations to determine unknown information about another substance 9 of 13 Amphoteric Substance that behaves as an acid and base 10 of 13 Hydrated crystal The crystalline form containing water 11 of 13 Anhydrous Crystal The crystalline from containing no water 12 of 13 Water of crystallisation Refers to watr molecules that form an essential part of the crystalline structyre of a compound 13 of 13
Comments
No comments have yet been made