Nitrogen's place in the table and ammonia animation
An animation that plays by itself on a loop: nitrogen's place in the table and ammonia.
The periodic table · covers the O-Level, IGCSE, GCSE topic
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.
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Free guide: 12 practicals as sims, and how to run one in a lesson →
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More chemistry sims
- The atom builder simProtons (mass 1, charge +1) and neutrons (mass 1, charge 0) sit in the nucleus; electrons (mass 1/1840, charge −1) sit in shells round it.
- The blast furnace simThe zone temperatures are the lesson's (about 700, 900, 1200 and 1900 °C, and iron tapped at about 1500 °C).
- Calorimetry simStart the clock, take readings for 30 s, then the alkali is poured in (or the solid tipped in) and stirred.
- Testing for cations simEach tube holds 2.0 cm³ of a 0.1 mol/dm³ solution of one cation.
- Chromatography simThe solvent (the mobile phase) soaks up the paper (the stationary phase) and carries each dye a fixed share of the way: a dye more soluble in the solvent goes further.
- Collision theory simCaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.