The water in the river behind my house is always black and it has a bad smell." Most of the students agreed with him.“I'm sorry, children," said the teacher. "Our water is getting dirtier and dirtier. This is a problem."词汇积累chemistry /'kemustri/ n.化学however /hau'eva/ adv....
The water in the river behind myhouse is always black and it has a bad smell." Most of thechildren agreed with him. “I'm sorry,children." said Miss Li,“Our water is getting dirtier and dirtier That's a problem.Word Listchemistry ['kemustri]n.化学问smel [smel] v.嗅,闻agree [...
What is chemistry in simple words? Chemistry is the study of the substances that make up our world (matter and energy). This includes everything from the shape of the water molecules that we drink to the manufacturing of chemical fertilizers that help us grow food.What...
Chemistry is a branch of science that studies what everything is made of and how it works. Cooking and making ice are chemistry as well as...
Find out about the science and chemistry of Water (dihydrogen monoxide, hydroxic acid, hydrogen hydroxide), see colourful images of Water and explore interactive 3D molecules of Water
“What is water like?" the teacher asked her students in the chemistry class. To the teacher's surprise, no one answered her this simple question.After a few scconds, the teacher asked again, "Why don't you answer my question? Don't you remember I have told you in the class what ...
从The students were having their chemistry class同学们在上化学课,可知答案选C。小题2:细节理解题。从Miss Li was telling the children what water was like李老师正在告诉孩子们水是什么样子的,可知答案选A。小题3:细节理解题。从The water in the river behind my house is always black and it has a...
particles of sand in water. Colloids - heterogeneous mixtures in which one is substance microscopically dispersed evenly throughout another substance (for comparison, the size of the particles of 'solute' are greater than in the case of a solution, but much smaller than in the case of a ...
Chemistry is the study of physical matter, which may be classified in many different ways, such as state of matter (gas, liquid or solid), chemical form (element, mixture or compound), chemical structure (atoms or molecules, etc.) and so on. ...
What Is Water? (Learn About) 水的力量1 英文原版 进口图书 Lisa M. Herrington著 京东价 ￥降价通知 累计评价 0 促销 展开促销 配送至 --请选择-- 支持 更多商品信息 中商童书旗舰店 店铺星级 商品评价4.7 高 物流履约4.5 高 售后服务4.6 高