Quantitative+chemistry

back to IB chemistry = How big is a mole: = = Topic notes =
 * It would take 10 billion chickens laying 10 eggs per day more than 10 billion years to lay a mole of eggs (http://www.visionlearning.com)

= Investigations = Prescribed investigations and spreadsheets to go with them Other

= Resources =

Animations
The following link, [|animation centre], takes you to a __site__ which has many animations, the ones relevant to this topic are (there are quite a few relevant to other IB chemistry topics) [|States of matter] [|Phase changes - but might not run] [|Boyle's law] [|Charles gas Law] [|Avogadro's Law] [|Investigations into gas laws] [|Kinetic molecular theory of gases] [|gas properties] [|limiting reagent] [|molar ratio's involving gases] [|combustion analysis of hydrocarbons] [|Titrations] media type="custom" key="28737220"
 * properties of gases
 * making solutions

[[file:percentage yield and atom economy.ppt]]
[|mole tutorial + worksheets with answers] [|mole again] [|empirical formula] [|experimental combustion analysis]

If you are interested
[|History of the development of the gas laws]

= Links to IGCSE Edexcel chemistry - last exam 2018 =

1.16 calculate relative formula masses (//M////r//) from relative atomic masses (//A////r//) 1.17 understand the use of the term mole to represent the amount of substance 1.19 carry out mole calculations using relative atomic mass(//A////r//) and relative formula mass (//M////r//) 1.21 write word equations and balanced chemical equations to represent the reactions studied in this specification 1.22 use the state symbols (s),(l),(g) and (aq) in chemical equations to represent solids, liquids, gases and aqueous solutions respectively 1.23 understand how the formulae of simple compounds can be obtained experimentally, including metal oxides, water and salts containing water of crystallisation 1.24 calculate empirical and molecular formulae from experimental data 1.25 calculate reacting masses using experimental data and chemical equations 1.27 carry out mole calculations using volumes and molar concentrations
 * 1.18 understand the term mole as the Avogadro number of particles (atoms,molecules, formulae, ions or electrons) in a substance**
 * 1.20 understand the term molar volume of a gas and use its values (24 dm3 and 24,000 cm3) at room temperature and pressure (rtp) in calculations**
 * 1.26 calculate percentage yield**