燃烧,在我们日常生活中,虽然已经是很熟悉的现象,可是,什麽是燃烧?燃烧需要些什麽条件?却很少有人能够充分地、具体地回答出来。现在我们在下面讨论一下。燃烧是激烈的氧化,也就是可燃物质和氧气急剧化合而改变其原来性质的一种化学变化。这种变化,常常伴随着光和热的发生。如煤、木柴、纸、腊烛、油等碳氢化合物,当它们燃烧的时候,其本身发生了化学变化成为灰烬及逸失于空中的二氧化碳和水汽从而放出了光和热。另一方面,如果不能改变物 Burning is a familiar phenomenon in our daily lives. However, what are the conditions for burning and burning? However, few people can fully and specifically answer it. Now we discuss it below. Combustion is intense chemical oxidation, a chemical change in which combustible substances and oxygen are rapidly combined to change their original properties. This change is often accompanied by the occurrence of light and heat. Hydrocarbons such as coal, firewood, paper, wax candles, and oil, when they are burned, undergo chemical changes themselves into ash and carbon dioxide and water vapor that escapes from the air, releasing light and heat. On the other hand, if you cannot change things