Metals and Non Metals 10th CBSE — 7-topic bundle

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You've already learned about metals and their chemical properties. Now let's dive into how non-metals behave when they meet other common substances.

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When metals and non-metals react, it's all about achieving stability. Atoms are most stable when their outermost electron shell is completely filled, just like the noble gases (e.g., Neon, Argon).

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You know that metals are all around us, but they don't just sit there as shiny, pure elements. Most metals are reactive, so they combine with other elements to form compounds.

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An alloy is a homogeneous mixture of two or more metals, or a metal and one or more non-metals. "Homogeneous" means the components are uniformly mixed and you can't see them separately, even under a powerful microscope.

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The most common example of corrosion you'll encounter is rusting of iron. Rust is hydrated iron(III) oxide (Fe₂O₃.xH₂O). Let's break down how it happens:

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