Interactive Chemistry Simulations for Students | Shikkha Web

Grade 8–11

Structure of the atom

Structure of the atom explained with an interactive simulation: protons, neutrons, electrons, atomic and mass number, isotopes and electron configuration, with solved examples.

Grade 8–11

Acids, Bases and the pH Scale

What is pH and what does the pH scale show? Drip a base into an acid, watch the indicator change colour and trace a live titration curve, with worked pH problems.

Grade 9–11

Electron configuration

How to write electron configurations: Aufbau order, Pauli and Hund rules, the Cr and Cu exceptions, ions and noble-gas shorthand. Watch electrons fill, Z 1–36.

Grade 9–11

Gas laws: Boyle, Charles, Gay-Lussac, Avogadro and PV = nRT

Push a piston and heat a gas: Boyle's, Charles's, Gay-Lussac's and Avogadro's laws, the ideal gas law PV = nRT, graphs, R values and solved problems.

Grade 8–11

What is ionic bonding, and how does a metal atom transfer electrons to a non-metal to form ions? Drop NaCl, MgO or CaCl2 into the simulation and watch charge balance derive the formula, with worked examples.

Grade 9–12

Electrolysis and Faraday’s Laws

What is electrolysis, what forms at the cathode and anode, and how does Faraday's law compute the mass deposited? Choose molten NaCl, CuSO2 or acidified water and watch, with worked examples.

Grade 9–12

Covalent Bond

What is a covalent bond? Build H₂O, NH₃, CH₄ and CO₂ atom by atom in a dot-and-cross simulation: single, double and triple bonds, lone pairs, the octet rule and bond polarity, with worked examples.

Grade 9–11

Periodic Trends

What are periodic trends? See how atomic radius, ionization energy, electronegativity and metallic character change across a period and down a group, on a heat map of the first 36 elements, with the real exceptions.