Doodh kharab kaise hota hai? Loha kyun zang pakadta hai? Patakhe kyun phatte hain? In sabke peeche hai chemical reaction (abhikriya) - aur uski apni ek bhaasha hai: chemical equation.
Board exam ka pehla aur sabse scoring chapter. 6 detailed lessons, ek Equation Balancer, Reaction Type Classifier game, Redox lab aur ek rich 3D Reaction Lab - sab easy Roman Hindi mein.
Physical vs chemical change, aur reaction hone ki 5 nishaaniyan (signs) - rang, gas, temperature, precipitate aur smell.
Word equation se symbol equation tak, aur step-by-step balancing (hit-and-trial) - board ka favourite sawaal.
Coefficients badlo aur dono taraf ke atoms live count hote dekho - jab tak equation balance na ho jaaye!
Do cheezein milkar ek banna, aur ek cheez ka toot kar kai banna - thermal, electrolytic aur photolytic decomposition (viyojan).
Zyada reactive metal (dhaatu) ka kam reactive ko hatana, ions ki adla-badli, aur precipitate (avakshep) banna.
Reaction dekho aur uska type pehchaano - game format mein, turant feedback ke saath!
Kaunsi reaction garmi deti hai aur kaunsi garmi leti hai - respiration (shwasan) se lekar cold pack tak.
Rich 3D lab - atoms ko reactants se products mein rearrange hote dekho, aur khud ginno ki ek bhi atom kam-zyada nahi hua!
Oxygen jud'na aur hat'na, redox reactions, aur rozmarra mein corrosion (zang) aur rancidity.
Alag-alag conditions mein loha rakho - paani, hawa, tel, paint - aur dekho zang kab lagta hai!