题目

碳是组成化合物种类最多的元素，某学习小组对含碳物质进行科学探究。 （1） 下列物质均由离子构成的是 。 A . CO2、CO B . 碳酸镁、碳酸钠 C . 甲烷、乙烯 D . 金刚石、石墨 （2） CO和CO2均为碳的氧化物，且组成元素相同，但它们的化学性质却有很大的区别，这是因为 。 （3） 实验室可用如图所示的装置制取纯净、干燥的CO，然后用CO还原Fe2O3并检验气体产物。①C装置中的加热仪器的名称是 ；C装置中反应的化学方程式为 。②A装置阅读下文并回答问题。Mr. Smith had two sons .One is seven years old, and the other is five. One morning during the holidays, when he was cleaning the car, his younger son came and asked him for some money for sweets. “Sweets are bad for your teeth,” Mr. Smith said. “Take these two oranges instead ,and give one to your elder(年长的)brother,” One of the oranges is quite a lot bigger than the other one ,and as the small boy liked oranges very much, he kept that one for himself, and gave his brother the smaller one. When the other boy saw that his brother had a much larger orange than his own ,he said to him, “It’s selfish(自私的)to take the bigger one for yourself. If father had given me the oranges, I’d have given you the bigger one.” “I know you would,” answered his brother.” That’s why I took it.”小题1:What did his younger son ask for? ______________________________________________.小题2:Did the elder brother get the bigger orange? ______________________________________________.小题3:Why did the elder brother say that his brother was selfish? ________________________________________________.