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初中化学易混淆的概念较多,给初学者带来许多困难,现把易混淆的十组化学概念辨析如下: 一、烟与雾烟:是指细小的固体小颗粒悬浮在空气中。如碳的不充分燃烧,细小的碳粉颗粒悬浮在空气中形成烟。雾:是指细小的液滴悬浮在空气中。如打开浓盐酸的瓶盖时看到的白雾,是浓盐酸挥发出来的氯化氢与空气中的水
The concept of easy-to-be-confused chemistry in junior high school has brought many difficulties for beginners. Now the confusing ten groups of chemical concepts are identified as follows: 1. Smoke and Fog: It refers to the tiny solid particles suspended in the air. If the carbon is not fully burned, fine toner particles are suspended in the air to form smoke. Fog: refers to the tiny droplets suspended in the air. The white fog that you see when you open the lid of concentrated hydrochloric acid is the hydrogen chloride evaporated from concentrated hydrochloric acid and the water in the air.