百度试题 结果1 题目5 Which of the following shows a mixture of a compound and an element? B中F BA BC D 相关知识点: 试题来源: 解析 B 反馈 收藏
In a flame test, a compound gives a yellow - orange flame. Which element is most likely present in this compound? A. Sodium B. Potassium C. Copper D. Calcium 相关知识点: 试题来源: 解析 A。在焰色反应中,钠元素的焰色反应为黄色(黄色 - 橙色接近钠元素的焰色)。选项B钾元素的焰色反应为...
A reaction in which one element takes the place of another in a compound is called a ___. A. combination reaction B. decomposition reaction C. displacement reaction D. redox reaction 相关知识点: 试题来源: 解析 C。displacement reaction 是置换反应,即一种元素取代化合物中的另一种元素;combinatio...
aaccompany for yo 伴随为[translate] ahere are some cakes with you 这有些蛋糕与您[translate] aIn each of the follow pairs decide which is an element and which is a compound. 在每一跟隨對決定哪些是元素,并且哪些是化合物。[translate]
Process for preparation of an element or a compound of an element, which and enriched with an isotope of the elementLYDTIN HWILDEN RSEVERIN P
a脱衣跳舞 Escapes the clothes to dance[translate] atee server is not running 发球区域服务器不是跑[translate] aIn each of the follow pairs,decide which is an element and which is a compound. 在每一個跟隨對,決定哪些是元素,并且哪些是化合物。[translate]...
11. Which of the following is NOT a compound word? (大纲样题) a. Landlady b. Greenhouse c. Uplift d. Unacceptable 12. The word holiday originally meant “holy day”; but now the word signifies “any day on which we don’t have to work”. This is an example of ___. (大纲 a. ...
Answer to: Which of the following is an example of an organic compound found in the human body? a) Water b) Protein c) Oxygen d) Carbon Dioxide By...
Which of the following substances is the largest component of urine by weight after water? a. creatine b. urea c. insulin d. uric acid Which of the following is an example of an organic compound found in the human body? a) Wat...
The written form of English is a(an)( )representation of the spoken form. A. selective B. adequate C. imperfect D. natural 13. Structurally a( )is the smallest meaningful unit of a language. A. morpheme B. stem C. word D. compound 14. Unlike affixes,( )are often free morphemes. ...