Nimbu khatta kyun hai? Sabun chikna kyun lagta hai? Pet mein jalan kyun hoti hai? Aur haldi daag laal kyun ho jaata hai? Sab kuch H⁺ aur OH⁻ ions ka khel hai.
Board ka bahut scoring chapter. 6 detailed lessons, Indicator Lab, pH Scale Explorer, Neutralisation Titration sim aur ek rich 3D Ion Lab - sab easy Roman Hindi mein.
H⁺ aur OH⁻ ions wali definition, rozmarra ke acids-bases, aur unke gun (properties).
Litmus, methyl orange, phenolphthalein, olfactory indicators aur haldi jaise gharelu indicators.
Nimbu, sabun, sirka, baking soda - koi bhi cheez chuno aur 4 indicators mein uska rang badalte dekho!
Metal (dhaatu), carbonate, metal oxide ke saath reactions - saare board-favourite equations.
Acid + base = salt + paani, salt ke parivaar, aur salts ka acidic/basic/neutral hona.
Acid mein boond-boond base daalo aur pH ko badalte dekho - jaise hi neutral hua, rang badal jaayega!
pH 0 se 14, strong vs weak acids, aur pet ki jalan se lekar daanton ke sadne tak - sab pH ka khel.
pH scale par slider ghumao - har pH par kaunsi cheez aati hai aur shareer/kheti par kya asar, sab dekho!
Sodium hydroxide, bleaching powder, baking soda, washing soda aur Plaster of Paris - banana aur upyog.
Rich 3D lab - HCl aur NaOH ko ions mein tootte dekho, phir H⁺ + OH⁻ milkar paani banaye aur Na⁺Cl⁻ salt!