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试题说明:1.可能用到的相对原子质量:H:1C:12 N:14 O:16 Na:23 S:32 Cl:35.5 Ca:40 Cu:64Fe:56 Zn:65 Al:272.考试时间:2 h一、选择题(本题包括15个小题,每小题2分,共30分。每小题有1个或2个选项符合题意。若有两个答案的错1个不得分,漏选1个扣1分。)1.将下列四种家庭常用的调味品分别放入水中,不能形成溶液的是( )。A.食盐 B.食用油 C.味精 D.蔗糖2.下列符号中,既能表示一个原子,又能表示一
Test Description: 1. Possible relative atomic mass: H: 1C: 12 N: 14 O: 16 Na: 23 S: 32 Cl: 35.5 Ca: 40 Cu: 64 Fe: 56 Zn: 65 Al: : 2 h First, multiple choice questions (This question includes 15 small questions, each small question 2 points, a total of 30. Each small question has 1 or 2 options in line with the problem .If there is two answers wrong 1 not score , Missed a deduction of 1 points.) 1. The following four kinds of family commonly used spices were placed in water, can not form a solution is (). A. Salt B. Edible oil C. MSG D. Sucrose 2. In the following symbols, both an atom and a