内蒙古开鲁县蒙古族中学2017_2018学年高一化学下学期第三次周测试题(无答案).doc

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1、 1 -内蒙古开鲁县蒙古族中学 2017-2018 学年高一化学下学期第三次周测试题(无答案)(50 分)1、选择题(本题包括 5 个小题,每小题 6 分,共 30 分)1.下列化合物不是离子化合物的是( )A.H2O B.CaI2 C.KOH D.NaNO32.AB 属于离子型化合物,其中 A 离子和 B 离子的电子层结构不同,从原子的最外层电子数看 A比 B 少 4,而次外层电子数 A 比 B 多 6,则该离子化合物是( )A.MgO B.CaO C.KCl D.MgS3.下列叙述中正确的是( )A.只有活泼金属与活泼非金属之间才能形成离子键B.具有共价键的化合物是共价化合物C.具有离子

2、键的化合物是离子化合物D.化学键是分子中多个原子之间的相互作用4.下列事实与氢键有关的是( )A.水加热到很高的温度都难以分解B.水结成冰体积膨胀,密度变小C.CH4、SiH 4、GeH 4、SnH 4熔点随相对分子质量增大而升高D.HF、HCl、HBr、HI 的热稳定性依次减弱5.在共价化合物中,元素化合价有正负的主要原因是( )A.电子有得失B.共用电子对有偏移C.电子既有得失又有电子对偏移D.有金属元素的存在二、非选择题(本题包括 2 个小题,共 20 分)6.写出下列原子的电子式(6 分)Na Mg C N O Cl7.写出下列离子的电子式:(10 分)- 2 -H+ Na + Mg 2+ Cl - S 2-Br- H - K + O 2- N 3-8.写出下列物质的电子式和结构式(4 分)氯气溴化氢氮气过氧化氢

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