A Complete Collection of 100000 Whys
Fav十万个为什么
为什么化学反应能改变物质？
1、化学反应涉及原子重新排列，原子核不变但电子层发生变化，导致物质性质改变。
2、化学反应通过化学键的断裂和形成，使原子组合方式改变，生成新物质。
3、能量变化是化学反应的关键，吸热或放热过程改变了物质的能量状态。
4、反应条件如温度、压力和催化剂能影响反应速率和方向，从而改变物质。
5、质量守恒定律说明反应前后原子总数不变，但组合方式不同，导致物质改变。
总之，化学反应通过原子重新组合和能量变化，使物质在分子和原子层面发生根本性改变。
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