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Oxidation

Chemistry

When something combines with oxygen, usually causing a change in its appearance or properties.

抂芁

Oxidation is a common process we see in everyday life, like when an apple turns brown or metal rusts. 🍎 It happens when a substance meets oxygen from the air and undergoes a chemical change. Think of it like oxygen giving a substance an unwanted makeover - sometimes slow, sometimes fast, but usually causing visible changes.

詳现説明

The Basics of Oxidation

It's like oxygen giving a big hug to other materials. When oxygen molecules attach themselves to another substance, they change its structure. Just like how a fresh cut apple starts changing color when exposed to air. 🍏➡🟀

Speed of Oxidation

Some oxidation happens slowly (like rust forming on a bike over months), while some happens quickly (like a fire, which is rapid oxidation). It's like the difference between slowly eating a sandwich and gulping it down! 🔥

Protection Against Oxidation

We can prevent or slow down oxidation by keeping things away from oxygen. It's like wrapping food in plastic wrap or putting oil on metal - we're creating a barrier that oxygen can't easily cross. 🛡

䟋題

  • When you leave a half-cut avocado out, it turns brown - that's oxidation happening right before your eyes! 🥑
  • A shiny new bicycle left in the rain will eventually develop reddish-brown rust spots - that's oxidation of the metal. 🚲
  • When you squeeze lemon juice on a cut apple, it stays fresh longer because the acid prevents oxidation - like a protective shield! 🍋

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