我们生活在一个五彩缤纷的世界,在我们周围经常看到这样一些现象,比如,铁钉生锈、煤炭燃烧、钢铁冶炼等。我们看到了一些物质转变成了另外一些物质,那么他们是怎么变化的呢?我们还经常见到汽车、自行车的轮胎、色彩艳丽的各种塑料、农业上用的化肥,这些都是如何得来的呢?要想弄清楚这些问题,就必须探索奇妙的化学世界。而通过学习化学,掌握化学知识,就可以了解其中的奥妙。 We live in a colorful world where we often see such phenomena as rusty nails, coal burning, iron and steel smelting, and so on. How do we change when we see something transformed into something else? We often see cars, bicycle tires, colorful varieties of plastic, agricultural fertilizers, how are these things coming from To figure out these problems, we must explore the wonderful world of chemistry. By learning chemistry, mastering chemical knowledge, you can understand the mystery.