Step 3 · Choose a topic · Class 10

Chemistry

Explore matter, atoms, reactions and the periodic table.

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Explore → practise → quiz → revise. Earlier topics are recommended preparation; every topic stays open.

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01Chemical reactions

Balance a reaction

NCERT chapter connection

Change molecule counts on the reactant side to balance hydrogen and oxygen against two water molecules. Atom counts must be equal on both sides. The animation rearranges a balanced set; it does not show a reaction mechanism.

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02Chemical reactions

Reaction mass ratios

NCERT chapter connection

For 2H₂ + O₂ → 2H₂O, hydrogen and oxygen react in a mass ratio of 1:8 using rounded molar masses. Adjust both starting masses to explore the limiting reactant.

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03Shared reference

Periodic table

Shared reference

Select elements, compare groups and periods, then test your understanding in the element quest.

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