Corrosion Reactions | 腐蚀反应

📚 Corrosion Reactions | 腐蚀反应

Corrosion is a slow chemical reaction that damages metals when they react with substances in their surroundings. Rusting, the corrosion of iron, is one of the most common examples. In this KS3 chemistry revision guide, you will learn what corrosion is, the conditions needed for rusting, and the main ways to prevent it.

腐蚀是一种缓慢的化学反应，当金属与周围环境中的物质发生反应时就会受到破坏。铁生锈是最常见的例子之一。在这份 KS3 化学复习指南中，你将学习什么是腐蚀、铁生锈所需的条件以及防止腐蚀的主要方法。

1. What Is Corrosion? | 什么是腐蚀？

Corrosion is the gradual wearing away or destruction of a metal caused by chemical reactions with oxygen, water or other chemicals in the environment. During corrosion, the metal atoms lose electrons and form compounds such as oxides, hydroxides or sulfides. This is an oxidation reaction because the metal combines with oxygen or loses electrons.

腐蚀是指金属因与环境中的氧气、水或其他化学物质发生化学反应而逐渐损耗或破坏的过程。在腐蚀过程中，金属原子失去电子，形成氧化物、氢氧化物或硫化物等化合物。这是一种氧化反应，因为金属与氧结合或失去电子。

Many metals corrode, but iron corrodes faster than some others because its oxide layer is flaky and falls off, exposing fresh metal underneath. Some metals, such as aluminium and zinc, form protective oxide layers that slow down further corrosion.

许多金属都会腐蚀，但铁的腐蚀速度比某些金属快，因为它的氧化层很疏松、容易剥落，从而暴露出下面的新

Published by TutorHao | KS3 Chemistry Revision Series | aleveler.com

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