Maya groaned. “That’s cheating, Mom.”
Suddenly, the concept clicked. She opened the solution book again — not to copy, but to her own answers to 10 practice questions. Each time, the solutions explained the reason , not just the final line. viraf j dalal chemistry class 8 icse solutions
The topic? Physical and Chemical Changes — specifically, why a rusted nail weighed more than a new one. Her textbook said: “Rusting is oxidation. Iron combines with oxygen to form iron oxide.” But in her head, that made no sense. If something rusts and flakes away, shouldn’t it weigh less ? Maya groaned
Her father, a civil engineer, was busy with site plans. Her mother suggested, “Why not check the solution book?” Each time, the solutions explained the reason ,
Maya didn’t have 3 days, but she had a lightbulb moment: The rust isn’t just “damage.” It’s a new substance that captured invisible oxygen from the air.