解析 B。解析:蜡烛燃烧时,蜡与氧气发生化学反应,生成二氧化碳和水,这是蜡烛燃烧这个化学变化的本质。选项A蜡不会单纯地变成水。选项C蜡不会变成氢气。选项D蜡更不会变成氧气。从英语角度看,考查了蜡、氧气、二氧化碳、水、氢气等英文单词以及对蜡烛燃烧化学原理用英语描述的理解。
And actually, there are a few other things that can burn you besides just extreme heat. For example, you can get chemical burns from caustic chemicals. In those cases you don't get burned from any kind of heat, but from the chemicals. I believe even some common household chemicals can ...
Chemical burnsBurn managementDecontaminationBurn surgeryIrrigationImmediate debridementThe purpose of this study is to investigate the efficacy of decontamination by immediate surgical debridement in the acute management of chemical burns as compared to conventional dilutional approaches by irrigation or wetting....
The inorganic “salt” form of these metals bond to other elements creating compounds even more toxic than than they are by themselves. These “new” compounds cause chemical reactions with other elements in our bodies as well as those of our pets and animals as well as the plants that we ...
Chemical burns.Strong acids, solvents or detergents that touch your skin can cause it to burn. Electrical burns.If you come into contact with an electrical current, you can get this type of burn. How Bad Is My Burn? Doctors group burns into different categories based on how deeply your ski...
-Mr. Burns Re: What are some good starting chemicals? help arg! no responses « Reply #13 on: January 01, 2007, 05:41:28 PM » Quote Is 36% a fairly good dilute amount for a beginer? That is the very reason I'm conflicted having this forum up. Have you taken a Chemistry ...
refers to the four fundamental processes that are regularly taught to students enrolled in introductory chemistry courses. For some students these processes are part of their laboratory training to be a chemist. 关键词: BE-CU ALLOYS MAGNETIC PROPERTIES DOI: 10.1021/ed072p932 被引量: 9 年份...
What color is produced when steel burns? What is sodium nitrate? What is coupling of chemical reactions? What chemical reactions take place in photography? What is the name of a proton acceptor in a reaction? What is the chemical formula for potassium oxide?
As I said, thenausea really only impacts me on the actual infusion day – the only other sideeffects are relatively minor. After a few days delay, I’ll get somefatigue (due to blood cell tox) and my legs and feet will feelsunburnt(essentially chemical burns) – butthese side effects ...
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