Solubility and pollutants sim
Solubility: each cell is worked out from the lesson's rules.
Solubility and pollutants · covers the GCSE, IGCSE, O-Level topic
What the sim shows
Solubility: each cell is worked out from the lesson's rules. Sodium, potassium and ammonium salts and all nitrates are soluble; chlorides, bromides and iodides are soluble except silver and lead(II); sulfates are soluble except barium and lead(II), with calcium sulfate slightly soluble; carbonates and hydroxides are insoluble except sodium, potassium and ammonium, with calcium hydroxide slightly soluble. A swatch shows the precipitate's colour, the same colours as the cation and anion test figures. Cells marked “beyond the lesson” add a fact the rules leave out. The method comes from two questions: is the salt soluble, and is the starting material soluble? Pollutants: the nine in the lesson, with where each comes from, the harm it does and how it is cut.
- ✓ a right answer
- ✗ a wrong answer
Use it in your lessons
- Try it here: anyone can unlock 2 figures free, and a free account unlocks up to 5. Runs on a laptop, a Chromebook or a phone; nothing to install.
- Present it and share student links with the teacher plan, from US$5 a month, billed yearly.
- Put it on your own website or LMS for US$9, paid once, or every sim from US$29 a month.
Free guide: 12 practicals as sims, and how to run one in a lesson →
Need a version for your exact set-up? Have one made: US$49 a figure in an order of 5.
More chemistry sims
- Reversible reactions and dynamic equilibrium simSqueeze or heat a sealed syringe of NO₂, add acid or alkali to chromate, and run a model contact-process converter, watching the forward and backward rates become equal as the mixture settles.
- Extracting aluminium by electrolysis simThe student runs a cut-away aluminium smelting cell: melts alumina, adds cryolite, switches on the current, waits hour by hour, changes a worn anode, taps the metal and plots the aluminium made.
- Homologous series and isomers builder simBuild molecules atom by atom, check and name them, find every isomer of a formula, test for C=C with bromine water and compare boiling points across five series.
- How much oxygen is in air? simPush 100 cm³ of air back and forth over hot copper between two gas syringes, read the volume after each pass, let it cool and work out that about 21 % of air is oxygen.
- Catalysts and enzymes: decomposing hydrogen peroxide simWeigh a catalyst, add it to hydrogen peroxide, read the gas syringe every 10 s, compare the curves, then filter and reweigh the catalyst and test the gas.
- Thermometric titration simAdd sodium hydroxide to acid in a polystyrene cup a portion at a time, stir, record the temperature, and find the end point and the acid's concentration where two best-fit lines meet.