2018年中考化学真题分类汇编2我们身边的物质考点12金属和金属材料1金属活动性顺序2实验和实验方案氢气生成速率的探究(无答案).doc

上传人:bowdiet140 文档编号:1129922 上传时间:2019-05-08 格式:DOC 页数:2 大小:39KB
下载 相关 举报
2018年中考化学真题分类汇编2我们身边的物质考点12金属和金属材料1金属活动性顺序2实验和实验方案氢气生成速率的探究(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2我们身边的物质考点12金属和金属材料1金属活动性顺序2实验和实验方案氢气生成速率的探究(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 12 金属和金属材料(18 绍兴)25.小敏研究影响锌与盐酸反应快慢的因素。序号 盐酸溶液浓度 2 分钟内产生氢气的体积1 5% 10mL2 15% 28mL(1)图甲中 A、B 仪器可以组装一套测量气体体积的装置,利用该装置时 A 中的_管接 c。(2)他选用 2 克完全相同的锌片分别和同体积 5%、15%的稀盐酸进行实验。获得表格数据。由此推断实验是通过_来体现反应快慢的。(3)小敏分析数据得到如下结论:锌与盐酸反应快慢与盐酸浓度有关,盐酸浓度越大反应越快。其他同学认为结论不可靠,他们的依据是:_。2(4)实验中小敏发现锌与盐酸反应时,一开始产生氢气速度并没有随盐酸浓度的减少而减慢,查阅资料得知化学反应中往往伴随着能量变化。由此作出猜想:锌与盐酸反应快慢还与_有关。

展开阅读全文
相关资源
猜你喜欢
  • DIN EN ISO 15175-2011 Soil quality - Characterization of soil related to groundwater protection (ISO 15175 2004) German version EN ISO 15175 2011《土壤质量 与地下水保护相关的土壤性质(ISO 15175-2004).pdf DIN EN ISO 15175-2011 Soil quality - Characterization of soil related to groundwater protection (ISO 15175 2004) German version EN ISO 15175 2011《土壤质量 与地下水保护相关的土壤性质(ISO 15175-2004).pdf
  • DIN EN ISO 1518-1-2011 Paints and varnishes - Determination of scratch resistance - Part 1 Constant-loading method (ISO 1518-1 2011) German version EN ISO 1518-1 2011《色漆和清漆 耐擦伤性的测定.pdf DIN EN ISO 1518-1-2011 Paints and varnishes - Determination of scratch resistance - Part 1 Constant-loading method (ISO 1518-1 2011) German version EN ISO 1518-1 2011《色漆和清漆 耐擦伤性的测定.pdf
  • DIN EN ISO 1518-2-2012 Paints and varnishes - Determination of scratch resistance - Part 2 Variable-loading method (ISO 1518-2 2011) German version EN ISO 1518-2 2011《油漆和清漆 耐擦伤性的测定.pdf DIN EN ISO 1518-2-2012 Paints and varnishes - Determination of scratch resistance - Part 2 Variable-loading method (ISO 1518-2 2011) German version EN ISO 1518-2 2011《油漆和清漆 耐擦伤性的测定.pdf
  • DIN EN ISO 15181-1-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 1 General method for extraction of biocides (ISO 15181-1 200.pdf DIN EN ISO 15181-1-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 1 General method for extraction of biocides (ISO 15181-1 200.pdf
  • DIN EN ISO 15181-2-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 2 Determination of copper-ion concentration in the extract a.pdf DIN EN ISO 15181-2-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 2 Determination of copper-ion concentration in the extract a.pdf
  • DIN EN ISO 15181-3-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 3 Calculation of the zinc ethylene-bis(dithiocarbamate) (zin.pdf DIN EN ISO 15181-3-2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 3 Calculation of the zinc ethylene-bis(dithiocarbamate) (zin.pdf
  • DIN EN ISO 15181-4-2009 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 4 Determination of pyridine-triphenylborane (PTPB) concentra.pdf DIN EN ISO 15181-4-2009 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 4 Determination of pyridine-triphenylborane (PTPB) concentra.pdf
  • DIN EN ISO 15181-5-2008 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 5 Calculation of the tolylfluanid and dichlofluanid release .pdf DIN EN ISO 15181-5-2008 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 5 Calculation of the tolylfluanid and dichlofluanid release .pdf
  • DIN EN ISO 15181-6-2014 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 6 Determination of tralopyril release rate by quantitation o.pdf DIN EN ISO 15181-6-2014 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 6 Determination of tralopyril release rate by quantitation o.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