泉州台商区洛江中学2014年九年级上化学期末试卷
County continuation records has examined and approved the draft, spirit, believe, compaft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
A.+5 B.+6 C.+7 D.+8
8.下图是表示物质分子的示意图,图中“●”和“○”分别表示两种含有不同质子数的原子,则图中表示单质的是( )
9.5月12日是我国“防灾减灾日”。以下有关处理火灾现场方法错误的是( )
A.身上着火不可乱跑,要就地打滚使火熄灭
B.用水浇湿毛巾或衣物,捂住口鼻,低姿行走到安全通道
C.逃生路线被火封住,应退回室内,关闭门窗,向门窗浇水,发出求救信号
D.人员被火势围困在高层建筑时使用楼内电梯撤退
10.为适应火车提速,一些铁路线上原有的短轨需要连接为超长轨。工人常用2Al+Fe2O32Fe+Al2O3 这一反应原理来焊接钢轨。有关该反应的说法中,正确的是( )
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
11.草莓、香蕉等水果具有芳香气味,是因为其中含有乙酸乙酯(化学式为C4H8O2)等物质。下列关于乙酸乙酯的说法正确的是( )
A、该物质中碳、氢、氧的质量比为12︰1︰16 B、其分子由碳原子、氢原子和氧分子构成
C、该物质属于氧化物 D、该物质的相对分子质量为88
12.下图是物质E和G发生化学反应生成另外两种物质L和M的微观示意图,则下列有关说法错误的是 ( )
A、一个E分子由3个氢原子和1个氮原子构成
B、L、M两物质中一共含有氢、氮、氯三种元素
C、G物质和M物质都是单质
D、该反应为置换反应
二.填空与简答(本题有3小题,共30分)
13.(8分)化学就在我们身边,我们
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