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火山喷发小实验作文400字

2022-09-26 05:30:01三年级274

火山喷发小实验作文400字

Today, I did a little test, I name “ volcano to erupt to it ” , listen to this name to be stimulated very much! Is volcano how erupt? I am taking the test that began me of have one's mind stuffed with questioningly.

今天,我做了一项小实验,我给它取名“火山喷发”,听这个名字就很刺激吧!火山是怎么喷发的呢?我带着满脑子的疑惑开始了我的实验。

The experiment began, I and mom prepared a lot of data: A the sodium bicarbonate, essence that wash clean, water, cup, box, chopstick and white vinegar. Be all set, the water of smaller part cup, essence that wash clean and saleratus fell in our preexistence cup, use chopstick agitate even, put the cup in the box again. Why should be “ put in the box? I ask ” mother. Mom uncannily laughs say: “ is fastened urgent, the hour that witnesses a miracle arrived immediately ” . Say, pour white vinegar into cup full marks / child in, immediately the water in the cup is risking bubble to begin upgrade to emerge, erupt to flow in the box euqally like magma really. “ test is successful! I am calling ” excitedly, also know the case uses Cheng Fangyan starch. I already curiosity asks mother excitedly again: Why did “ add acetic “ volcanic ” to you can erupt? ” mom tells me: “ this is a kind of chemical reaction, sodium bicarbonate is a kind of alkalescent salt, encounter the white vinegar that contains acid to be able to produce carbon dioxide, and carbon dioxide encounters the essence that wash clean to be able to produce many foam, bubble became much come out with respect to meeting excessive. ”

实验开始了,我和妈妈准备了许多材料:小苏打、洗洁精、水、杯子、盒子、一根筷子和白醋。准备就绪,我们先在杯子里倒了小半杯水、洗洁精和小苏打,并用筷子搅拌均匀,再把杯子放在盒子里。“为什么要放在盒子里呢?”我问妈妈。妈妈神秘地笑了笑说:“别急,见证奇迹的时刻马上就到了”。说完,便把白醋倒入杯满分/子里,顿时杯子里的水冒着泡沫开始往上涌,真像岩浆喷发一样流到盒子里。“实验成功啦!”我激动地喊着,也知道盒子是用来盛放岩浆的。我既好奇又激动地问妈妈:“为什么加了醋“火山”就会喷发呢?”妈妈告诉我:“这是一种化学反应,小苏打是一种碱性的盐,遇到含有酸性的白醋就会产生二氧化碳,而二氧化碳遇到洗洁精就会产生大量的泡沫,泡沫多了就会溢出来。”

How interesting experiment! Look the test still must be done more after me, such ability discover the gate that leads to scientific world.

多么有趣的实验啊!看来我以后还得多做实验,这样才能发现通往科学世界的大门。(文/何沐宸)

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