2023学年度重庆市西南师大附中第一学期九年级12月月考化学试卷〔共四个大题，总分值100分，考试时间：90分钟〕可能用到的相对原子质量：H1C12O16Na23Ca40一、选择题〔本大题包括15个小题，每题2分，共30分〕每题只有一个选项符合题意．1．在物质的运动中只发生物理变化的是············································〔〕A．干冰升华B．瓦斯爆炸C．烟花燃放D．铜器生锈2．CO与CO2在性质上不同的原因是·················································〔〕A．CO2比空气重B．CO难溶与水C．分子结构不同D．制法不同3．以下气体中，有毒的是····························································〔〕A．N2B．O2C．COD．CO24．以下不属于氧气用途的是···························································〔〕A．潜水B．急救C．灭火D．气焊5．类推的思维方法在化学学习中应用广泛，例如：，由此推断，过氧化钡的化学式为···········〔〕A．Ba2OB．BaO2C．Ba2O2D．BaO26．水果散发出诱人的香味，你能闻到香味的原因是·····························〔〕A．分子的质量很小B．分子之间有间隔C．分子的体积很小D．分子是不断运动的7．以下反响方程式书写正确的选项是···············································〔〕A．2H2O=O2↑+2H2↑B．4P+5O2=点燃2P2O5C．Zn+HCl=ZnCl2+H2↑D．KMnO4=K2MnO4+MnO2+O2↑8．以以下图是元素周期表中钠元素的信息图，对图中信息理解不正确的选项是······························································································〔〕A．质子数为11B．元素符号为NaC.元素名称为钠D．相对原子质量为22.99g9．以以下图所示的一组实验可用于探究燃烧的条件。以下有关说法正确的选项是〔〕A．此组实验烧杯中的热水只起提高温度的作用B．图甲中水下白磷未燃烧是由于没有和氧气接触C．图甲实验不能比拟白磷和红磷的着火点D．假设将图乙中的白磷换成红磷也能观察...
