The classroom, we are conducting experiments - not a bad burn handkerchief. Handkerchief how bad it is not burning? Do not worry, listen to me with his right.

Class and the teacher said with confidence: "Today, to take everyone to be a pilot!" See you look puzzled, the teacher smiling, explains: "We have to give a handkerchief disfigured!" This should enable us to understand the. "You have to come back!" Teacher said. Teachers prepared a number of props: an iron bar, a handkerchief, a piece of paper and a bottle of alcohol, there is a pot filled with water basin.

First of all, the teacher put a handkerchief into the water, bubble a bubble, twist the screw, laying to the ground. The teacher asked: "What we see on the handkerchief?" Everyone rushes: "There is two cars!" "No, the train!" "Ah, the train." The teacher said, "What is a small train expression ah? "some students shouted:" smiling, yo, there are two little red face! "" Well, then, has been concerned for a while to train the face. "Then the teacher took out a pocket lighter. I thought: God, the teacher should be the loss of this piece of handkerchief! However, too itchy throat, also remark out. Then, I also "silly" to pray for a small handkerchief. "Black", a surge of flames jump out of burning of paper, thrown into a speckled handkerchiefs of alcohol, the teacher ought a small iron bars, pick pick, flames immediately become bigger, some people worry that says: "Do you burnt to the ground? "little train teachers so that the positive rushed us," Hey, how little trains still laugh that way? "teachers have been silent, did not answer our questions. "Bury, bury!" "Hows going on? How flames suddenly extinguished? Originally attached to the handkerchief on the water and alcohol, alcohol and water, compared with its density of small, volatile, burning the alcohol, so a will went out.

Waiting for us to explore the mysterious science, but as long as the love of science, and science on our side. Depict the seeds of science to explore the mysteries of a treasure map Zhang.

教室里，我们正在做实验——烧不坏的手帕。手帕怎么烧不坏呢？别着急，听我娓娓道来。

上课了，老师胸有成竹地说：“今天带大家做个试验！”看大家迷惑不解的样子，老师笑眯眯地解释着：“我们要给手帕‘毁容’！”这让我们更不解了。“你们都到后面来！”老师说道。老师准备了许多道具：一根铁棒、一块手帕、一张纸和一瓶酒精，还有一盆装满水的盆。

首先，老师把手帕放到水里，泡了泡，拧了拧，铺到地上。老师问：“大家看到手帕上有什么？”大家七嘴八舌道：“有两辆小汽车！”“不对，是火车！”“嗯，是火车。”老师说，“小火车是怎样的表情啊？”有同学喊：“微笑着的，哟，还有两个小红脸蛋！”“好，那么一会儿要一直关注小火车的表情。”说着，老师从口袋里摸出打火机。我心想：天哪，老师要损失了这块手帕！可是喉咙太痒，还把这句话说出来了。接着，我还“傻乎乎”地为小手帕祈祷。“啪”，一股火苗蹿了出来，燃着了纸，扔到了洒满酒精的手帕上，老师拿来小铁棒挑了挑，火苗立刻变大了，有人担心地说：“会不会把地面烧坏了？”老师让小火车的正面冲向我们，“咦，怎么小火车还笑呀？”老师一直沉默着，没有回答我们的问题。“灭了，灭了！”“怎么回事？火苗怎么突然灭了？原来，附着在手帕上的有水和酒精，酒精和水比起来，它密度小，易挥发，燃烧的是酒精，所以一会就灭了。

神秘的科学等着我们探索，但只要热爱科学，科学就在我们身边。科学的种子描绘出一张张探索奥秘的寻宝图。