Metals and Non-metals

What this chapter covers

Every element behaves like a metal or a non-metal, and that behaviour is consistent enough to predict: metals are lustrous, malleable, ductile conductors; non-metals mostly are not — though mercury, iodine, graphite and diamond are the exceptions worth remembering by name. Reacting metals with oxygen, water, acid and each other’s salts builds real evidence for the reactivity series, the single ranking that predicts almost everything else in this chapter.

That reactivity comes from how easily an atom gives up electrons — which is exactly how metals and non-metals react with each other to form ionic compounds like common salt. The same ranking then decides how a metal must be pulled out of its ore (extraction), and why some metals corrode away while others barely change — and what protects them when they do.

How each lesson works

Every topic opens with something to notice — a sample, a reaction, a comparison — before naming the term or writing the equation. Hazardous steps (burning sodium, handling acids, thermit, electrolysis) are shown as safe virtual demonstrations, exactly as the NCERT activity intends, never as something to try at home. The written notes under each lesson — definitions, equations, exceptions and a quick revision list — are there for fast recall without replaying the animation.