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Mr Khemistry
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Interactive 3D Simulations
See chemistry
in motion
3D interactive mechanism simulations for H2 Chemistry. Rotate, pause, and explore at your own pace.
All
Substitution
Addition
Aromatic
H2
Halogenoalkane
Nucleophilic
New
S
N
2 Mechanism
Backside attack of OH⁻ on 2-bromobutane. Watch the Walden inversion in real-time 3D with transition state pause.
H2
Halogenoalkane
Nucleophilic
New
S
N
1 Mechanism
Two-step ionisation via a carbocation intermediate — and why SN1 gives racemisation rather than inversion.
H2
Carbonyl
Nucleophilic
New
Nucleophilic Addition
Attack of CN⁻ on a carbonyl group — how the nucleophile targets the electrophilic C=O carbon.
H2
Alkene
Electrophilic
New
Electrophilic Addition
Addition of Br₂ to ethene — π bond attack, carbocation intermediate, and 1,2-dibromoethane product.
H2
Arene
Electrophilic
New
Electrophilic Substitution
Chlorination of benzene — how Cl⁺ attacks the aromatic ring and aromaticity is restored.
H2
Bonding
New
VSEPR Theory
Explore all 13 molecular shapes across 2–6 electron pairs. Interactive 3D rotation with lone pair visualisation.
H2
Physical
New
Gas Laws
Explore Boyle's and Gay-Lussac's Laws interactively. Watch particles collide as you adjust pressure, volume and temperature.
H2
Physical
New
Maxwell-Boltzmann Distribution
Visualise how molecular speeds are distributed in a gas. Adjust temperature and see the curve shift — and where activation energy fits in.