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卷 原子量:H-1 O-16 C-12 Al-27 Ca-40 Zn-65 S-32 一、选择题(本题共30分) 每题只有一个正确答案,将其标号填在括号里(每题2分)1.下列变化中,不属于化学变化的是( )。(A)铁矿石炼成铁 (B)煤燃烧(C)酒精挥发 (D)食物腐烂2.下列物质中属于化合物的是( )。(A)石灰石(B)食盐水(C)液氢 (D)水蒸气3.和一氧化碳具有相似化学性质的气体单质是( )。
Volume atomic weight: H-1 O-16 C-12 Al-27 Ca-40 Zn-65 S-32 First, multiple-choice questions (a total of 30 points in this question) Each question has only one correct answer, and its number is enclosed in parentheses (each Question 2) 1. In the following changes, chemical change is not (). (A) iron ore iron (B) coal combustion (C) alcohol volatilization (D) food rot 2. Compounds belonging to the following (). (A) Limestone (B) Saline (C) Liquid Hydrogen (D) Water Vapor 3. The gas with similar chemical properties to carbon monoxide is ().