碳在常温下性质稳定是化学性质,为什么?化学变化是什么?

2024-12-02 21:42:22
推荐回答(4个)
回答1:

性质稳定是指常温下不易与一些物质发生化学反应,例如碳常温下化学性质就稳定,以用墨写的字画保存多年不褪色。化学性质的稳定性是与活泼性相对而言,所以属于化学性质。
化学变化就是化学反应,化学变化是物质的本质发生了改变,都生成了新物质,判断化学变化的依据,就是看变化后是否有新物质生成。

回答2:

碳在常温下化学性质是不活泼的。碳受日光照射或跟空气、水分接触,都不容易起变化。我国古代用墨书写或绘制的字画,虽年深日久仍不变色,利用碳在常温下稳定的性质。但是随着温度升高,碳的活动性大大增强。如:能燃烧、有还原性等。

回答3:

性质稳定是指常温下不易与一些物质反应,例如氧气


等等
化学变化是生成新物质的反应
也就是说物质结构和性质发生了根本的改变

回答4:

因为它要是发生变化就生成了新物质。它是化学性质。
化学性质和物理性质本质区别就是有没有新物质的产生。
化学变化很多。如:C+O2=CO2

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