光与焰光与焰都是化学变化中的现象.光是固态物质被灼热或点燃而发生的,如镁、磷、碳等的燃烧;火焰是可燃性气体、易气化的可燃性液体或固体燃烧时产生的,如H2、CO、酒精、硫(受热后熔化变成硫蒸气)等的燃烧.烟与雾烟是大量固体小颗粒分散到空气中形成的,它属于固体;雾是大量小液滴分散到空气中形成的,属于液体.如磷在空气中燃烧生成P2O5固体而形 Light and flame and flame are all phenomena of chemical change. Light is the burning of solid matter by burning or igniting, such as burning of magnesium, phosphorus, carbon, etc. The flame is a flammable gas, a vaporizing flammable liquid or Solid burning, such as H2, CO, alcohol, sulfur (heated to melt into sulfur vapor), etc. Smoke and fog smoke is a large number of solid particles dispersed into the air formed, it belongs to the solid; the fog is a large amount Small droplets dispersed into the air formed, are liquid, such as phosphorus in the air combustion P2O5 solid form