Molecular, structural and empirical formulae of ethanol animation
An animation that plays by itself on a loop: molecular, structural and empirical formulae of ethanol.
Organic chemistry · covers the O-Level, IGCSE, GCSE topic
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More chemistry sims
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- Tell them apart: one test for two substances simTen look-alike pairs. Drag one test from the shelf onto both tubes, write both results, and get marked as an exam would: a clear, different result for each, both stated. See why the tempting tests fail.
- Plan a fair test: variables, repeats and errors simPlan an investigation into acid concentration and reaction time, choose your apparatus, then run it. Your choices set the scatter. Repeat, spot the anomaly, take means, draw your own best-fit line, conclude and evaluate, all marked against an exam mark scheme.
- The acid bench: acids with metals, bases and carbonates simFour acids, eleven things to add. Watch, warm, test the gas, then name the salt by dragging its ions together. Build the three general equations (and a fourth: base with an ammonium salt), and meet the careful cases: copper, nitric acid, marble in sulfuric acid and the weak ethanoic acid.
- Reacting volumes of gases simTake a hydrocarbon and oxygen into two gas syringes, spark, cool, read, then take out the carbon dioxide with sodium hydroxide and read again. The volumes give the formula, because equal volumes of gases hold equal numbers of moles.