2018年中考化学真题分类汇编4化学与社会发展考点20燃烧与燃料1燃烧与灭火2燃烧的条件(无答案).doc

上传人:brainfellow396 文档编号:1130071 上传时间:2019-05-08 格式:DOC 页数:2 大小:74KB
下载 相关 举报
2018年中考化学真题分类汇编4化学与社会发展考点20燃烧与燃料1燃烧与灭火2燃烧的条件(无答案).doc_第1页
第1页 / 共2页
2018年中考化学真题分类汇编4化学与社会发展考点20燃烧与燃料1燃烧与灭火2燃烧的条件(无答案).doc_第2页
第2页 / 共2页
亲,该文档总共2页,全部预览完了,如果喜欢就下载吧!
资源描述

1考 点 20 燃 烧 与 燃 料( 18 兰 州 ) 19.物质燃烧需要具备一定条件。已知白磷的着火点是 40 ,红磷的着火点是 240 ,则下列说法正确的是( )A.只要温度高于 240 ,红磷就一定能燃烧 B.常温下,红磷在空气中容易自燃 C.浸泡在热水 (80) 中的白磷,通入氧气与之接触,白磷也能燃烧 D.升高温度可以提高白磷的着火点(18 聊城)5.孔明灯燃气的火焰温度可达 300,但纸质灯罩却没被点燃的原因是A.纸张不是可燃物,不能燃烧 B.空气不充足,纸张不会燃烧C.风将热量吹散使灯罩处温度低于纸的着火点D.风将热量吹散后灯罩的着火点降低了(18 岳阳)10下列探究燃烧条件的实验中,只能得出“燃烧需要温度达到可燃物的着火点”的是( )A B C D2(18 北京)22、用下图所示实验验证可燃物燃烧的条件。已知:白磷的着火点为 40.(1)设计 B、D 的目的是 。(2)能验证可燃物需要 O2的现象是 。(3)AD 中,可不做的实验是 (填序号) 。

展开阅读全文
相关资源
猜你喜欢
  • NF C33-014-1995 Insulated cables and their accessories for power systems Screen tape for single-core cables of rated voltages from 6 10 (12) kv to 18 30 (36) kv 《电力系统用绝缘电缆及其附件 额定电压.pdf NF C33-014-1995 Insulated cables and their accessories for power systems Screen tape for single-core cables of rated voltages from 6 10 (12) kv to 18 30 (36) kv 《电力系统用绝缘电缆及其附件 额定电压.pdf
  • NF C33-100 AM1-1967 INSULATED CONDUCTORS FOR POWER SYSTEMS IMPREGNATED PAPER-INSULATED LEAD-SHEATHED CABLES 《电力网用绝缘或保护电缆 电力网用缘缘导线 浸渍纸缘铅包电缆》.pdf NF C33-100 AM1-1967 INSULATED CONDUCTORS FOR POWER SYSTEMS IMPREGNATED PAPER-INSULATED LEAD-SHEATHED CABLES 《电力网用绝缘或保护电缆 电力网用缘缘导线 浸渍纸缘铅包电缆》.pdf
  • NF C33-100-1965 Insulated conductors for power systems Impregnated paper-insulated lead-sheathed cables《电力系统用绝缘导体 油浸纸绝缘铅护套电缆》.pdf NF C33-100-1965 Insulated conductors for power systems Impregnated paper-insulated lead-sheathed cables《电力系统用绝缘导体 油浸纸绝缘铅护套电缆》.pdf
  • NF C33-209-1996 Insulated or protected cables for power systems - Bundle assembled cores for overhead systems of rated voltage 0 6 1 kv《电力系统用绝缘或保护电缆 额定电压为 0 6 1 kV 的架空电力系统用捆扎组装芯线》.pdf NF C33-209-1996 Insulated or protected cables for power systems - Bundle assembled cores for overhead systems of rated voltage 0 6 1 kv《电力系统用绝缘或保护电缆 额定电压为 0 6 1 kV 的架空电力系统用捆扎组装芯线》.pdf
  • NF C33-210-1995 Insulated or protected cables for power systems Cross-linked polyethylene insulated cables covered with a polyvinyl chloride sheath - Type H1 xdv-A 《电力系统用绝缘或保护电缆 带聚.pdf NF C33-210-1995 Insulated or protected cables for power systems Cross-linked polyethylene insulated cables covered with a polyvinyl chloride sheath - Type H1 xdv-A 《电力系统用绝缘或保护电缆 带聚.pdf
  • NF C33-214-1999 Insulated or protected cables for power systems - Branch cables with remote reading cable 《电力系统用绝缘或保防电缆 带远程读数电缆的分路电缆》.pdf NF C33-214-1999 Insulated or protected cables for power systems - Branch cables with remote reading cable 《电力系统用绝缘或保防电缆 带远程读数电缆的分路电缆》.pdf
  • NF C33-220 A1-1988 《NF C32-220-1988 的补充1》.pdf NF C33-220 A1-1988 《NF C32-220-1988 的补充1》.pdf
  • NF C33-220-1988 Insulated or protected cables for power systems Extruded solid dielectric insulated cables for rated voltages from 1 8 3(3 6) kv up to 18 30(36) kv 《电力系统用绝缘或保防电缆 额定.pdf NF C33-220-1988 Insulated or protected cables for power systems Extruded solid dielectric insulated cables for rated voltages from 1 8 3(3 6) kv up to 18 30(36) kv 《电力系统用绝缘或保防电缆 额定.pdf
  • NF C33-221-1990 Insulated or protected cables for power system concentric cables for road and street lighting for rated voltage of 3 6 6 (7 2) kv 《额定电压为 3 6 6 (7 2) kV 的道路和街道照明用电力系.pdf NF C33-221-1990 Insulated or protected cables for power system concentric cables for road and street lighting for rated voltage of 3 6 6 (7 2) kv 《额定电压为 3 6 6 (7 2) kV 的道路和街道照明用电力系.pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1