In the chemistry experiment, a precipitate formed. What does this mean? A. A gas was released. B. A solid formed in the liquid. C. The liquid changed color. D. The temperature increased. 相关知识点: 试题来源: 解析 B。解析:有沉淀形成意味着液体中有固体形成。选项 A 有气体释放 ...
What does the term "mole" mean in chemistry? What is the definition of chemistry? What does polyatomic mean? What is the definition of electropositive in chemistry? What is given by parentheses in a compound chemical formula? What does chemical compound mean?
Log In Sign Up Subjects Science What does inert mean in chemistry?Question:What does inert mean in chemistry?Chemistry:Chemistry is the science concerned with the study of chemical changes. Chemical changes occur when a substance either donates, accepts or shares electrons with another substance...
What does the underlined phrase(画线短语) “gives up" mean in Chinese?A.坚持B.放弃C.编造D.努力 答案 B 结果二 题目 Today is Friday, October 14th. It's my 1 birthday. But four hours ago, I didn't know it. My parents and friends 2 a joke on me. This morning my mother said she...
有心绞痛者心肌侧支循环比较丰富，这显示心绞痛或心肌缺血可以促进侧支循环的形成，从而对冠心病人具有保护作用。运动可以诱发心肌缺血，因而许多冠心病患者不敢运动或许多医生也警告患者避免运动。但运动有可能通过诱发可逆性心肌缺血，促进侧支循环的形成，增加心肌自我保护...
10.Whatdoestheunderlinedword“tangible”probably mean? A.Realistic. B.Creative. C.Challenging. D.Temporary. 11.Whatcanbeinferredfromtheresearchfindings? A.Peoplecangetsmartthroughlearning. B.Oneshouldnotdiscriminateotherraces. C.Peopledon?tenjoyequalrightsforeducation. D.Onecanlivelongerbygettingmoreeduca...
adoes not mean I do not want youyou 不意味我不想要youyou [translate] aVision,I love you more than I love me. 视觉,我爱你更多比I爱我。 [translate] aMy hobby is My hobby is [translate] aLittle information 一点信息 [translate] a他们正在屋里说话吗 In their room is speaking [translate]...
In a chemistry class, we learn about H2O. What does “H2O” mean? A. Hydrogen Oxygen B. Hydrogen two Oxygen C. Hydrogen dioxide D. Water 相关知识点: 试题来源: 解析 D。H2O 是水的化学式,表示由两个氢原子和一个氧原子组成的水分子。选项 A、B 表述错误,选项 C 是二氧化氢,不是 H2O 的...
In chemistry, concentration refers to the amount of a substance in a defined space. Another definition is that concentration is the ratio ofsolutein a solution to eithersolventor totalsolution. Concentration is usually expressed in terms ofmassper unitvolume. However, the solute concentration may al...
Adsorption is a surface phenomenon in which particles or molecules bind to the top layer of material. Absorption, on the other hand, goes deeper, involving the entire volume of the absorbent. Absorption is the filling of pores or holes in a substance. ...