作文库小学四年级内容页

醋泡鸡蛋实验观察日记

2022-09-30 06:34:07四年级411

醋泡鸡蛋实验观察日记

On October 2 on Friday shade

10月2日星期五阴

Hear acetic bubble egg can make egg molten, I believe not quite, the plan does a test.

听说醋泡鸡蛋可以使鸡蛋变软,我不太相信,打算做个实验。

In the morning at 7 o'clock, I am ready 3 type thing: White vinegar of a transparent glass, one pyxis and an egg. Above all, I pour vinegar into glass, put the egg in the cup gently next. At the beginning egg all around generated a lot of bubble, put on a coat like a fatso. Move close to hear, a pungent odour is tangy and come. The period of the day from 11 a.m. to 1 p.m. is divided in, I cherished curious mood to touch chorion face gently with handle gently, I discover amazedly, on egg edge already float had a Brown bubble. After 12 hours pass, ground of my too impatient to wait touched egg face again, this more make me open-eyed, hard hard chorion disappeared actually, become soft soft, seemed to take off armor.

早上7点,我准备好了三样东西:一个透明的玻璃杯、一小瓶白醋和一个鸡蛋。首先,我把醋倒入玻璃杯中,然后把鸡蛋轻轻放到杯子里。一开始鸡蛋四周产生了很多气泡,像一个胖子穿上了一层外套。凑近一闻,一股刺鼻的气味扑鼻而来。中午时分,我怀着好奇的心情用手轻轻地摸了一下蛋壳表面,我惊奇地发现,鸡蛋边上已经浮起了一层褐色的泡沫。12个小时过后,我迫不及待地又触摸了一次鸡蛋表面,这一次更让我惊讶,硬硬的蛋壳竟然不见了,变得软软的,好像脱掉了铠甲。

On October 3 on Saturday moderate rain

10月3日星期六中雨

I observed daylong, discover change is not big, only a few differ subtly. E.g. , before the egg is compared some fatter, do not hold even the cup almost issue it. Still have, before it is compared bouncier. I was played gently a few times, the feeling is very amused, but full marks / dare not resemble playing play marbles in that way forcibly, it meets for fear that shatter. I smell the odour of the egg again, it is again not pungent, have some of smell however.

我观察了一整天,发现变化并不大,只有一些细微的不同。比如说,鸡蛋比之前胖了些,差不多连杯子都容不下它了。还有,它比之前更有弹性。我轻轻地弹了几下,感觉很好玩,但满分/不敢像玩弹弹球那样用力弹,生怕它会破掉。我又去闻了闻鸡蛋的气味,它不再刺鼻了,而是有些发臭。

On October 4 on Sunday spit

10月4日星期天小雨

Eventually when this day, I take the egg cautiously rinse clean, next we come to shadow, open flashlight illuminate egg, indistinct can see yoke has egg liquid not only inside rock —— , still have other liquid, the likelihood is vinegar. I want to know why to can appear this kind of phenomenon, get online examine a data.

终于等到这一天了,我小心翼翼地把鸡蛋拿出来冲洗干净,然后我们来到暗处,打开手电筒照射鸡蛋,隐隐约约能看到蛋黄在晃动——里面不仅有蛋液,还有其他液体,可能是醋。我想知道为什么会出现这种现象,就上网查了查资料。

Because vinegar has weak acidity,chorion disappears is, can produce chemical reaction with the calcium carbonate in chorion, generation carbon dioxide. Put long chorion will be completely deliquescent, leave the film inside chorion till remnant (film is not dissolved) form “ not to have housing egg ” . Egg “ becomes fat because egg film can allow the young member such as the water inside vinegar to enter an egg,” is inside, and the protein macromolecule inside the egg cannot be worn piece, expand so greatened.

蛋壳消失是因为醋有弱酸性,能和蛋壳中的碳酸钙发生化学反应,产生二氧化碳。放久了蛋壳会完全溶解,直到剩下蛋壳内的膜(膜不溶化)形成“无壳蛋”。鸡蛋“变胖”是因为鸡蛋膜能允许醋里面的水等小分子进入鸡蛋内,而鸡蛋内的蛋白质大分子则无法穿出,所以就膨胀变大了。

This experiment makes me clear want to know its not only like that, and should know its the reason why. The view before acetic bubble egg confirmed not only, more let me acquire knowledge, experienced the fun in the life!

这个实验让我明白不仅要知其然,而且要知其所以然。醋泡鸡蛋不仅证实了之前的说法,更让我学到了知识,感受了生活中的乐趣!(文/邱俞洁)

再来一篇
上一篇:我的乐园游乐场作文400字 下一篇:你好大海作文350字
猜你喜欢