Carbon is a(n)___ while carbon dioxide is a compound.A. material B. substance C. agent D. element 相关知识点: 试题来源: 解析 D 正确答案:D解析:element n.(化学)元素;成分,要素material n.材料,原料;素材,资料。substance n.物质;实质;要旨,基本内容;根据,理由。agent n.代理人,代理商;(化学...
【题目】Carbon DioxideCarbon dioxide is a compound in which two oxygen atoms are connected to a carbon atom.At normal temperatures it is a colourless gas. Carbon dioxide is an important part of the carboncycle and essential for life on Earth. _1 Plants use the sunlight and take up the ...
百度试题 结果1 题目Carbon is a(n) ___ while carbon dioxide is a compound. A. material B. 。 substance C. agent D. 。 E. lement 相关知识点: 试题来源: 解析 d 反馈 收藏
瑞鸿网词典双语例句Carbon is an element, while carbon dioxide is a compound.碳是一种(化学)元素, 而二氧化碳则是一种化合物.
d) red blood cells. Carbon Dioxide: Carbon dioxide is a compound composed of two oxygen molecules attached to one carbon molecule. Carbon dioxide is a gas at room temperature and is a major component of the body. Answer and Explanation:...
Carbon dioxide is a colorless gas that exists in our atmosphere. It is a naturally-occurring compound composed of one carbon atom and two oxygen atoms.
Sulfur dioxide(二氧化硫)is an important compound in its own right。It is used in the manufacture of paper。When made from wood pulp or from other materials,paper is usually pale yellow in colour。 Sulfur dioxide is used to bleach(漂白)it to the white colour which is needed。Sulfur dioxide ...
In carbon dioxide absorbent compound ones, or the improvement which it is relatedDisclosed is a carbon dioxide absorbent formulation comprising: a pharmaceutically acceptable hydroxide essentially free of sodium, potassium and barium hydroxides; calcium and/or magnesium chloride; a hardening agent; and a...
A useful definition of an air pollutant is a compound added directly or indirectly by humans to the atmospherein such quantities as to affect humans, animals, vegetation, or material adversely(有害地). Air pollution requiresa very flexible definition that permits continuous change. When the first...
CARBASORD CARBC CARBG CARBICE CARBIS CARBOB carbon dioxide CARBOY CARC CARCA CARCAH CARCAS CARCAV CARCC CARCEPT CARCI CARCIP CARCLE CARCN CARCNET CARCO CARCR CARCRET CARCS CARCSLR CARCU CARD CARD 2 CARD PORT CARDA CARDART CARDATS ▼...