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小李同学做了如下实验在甲乙两个大小相同的烧杯中各加入等量的蓝墨水和红墨水将芹菜的叶柄从基部沿中间切开分别插入两个烧杯中如图所示一段 Template






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tomski小李同学做了如下实验在甲乙两个大小相同的烧杯中各加入等量的蓝墨水和红墨水将芹菜的叶柄从基部沿中间切开分别插入两个烧杯中如图所示一段 coloring
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小李同学做了如下实验在甲乙两个大小相同的烧杯中各加入等量的蓝墨水和红墨水将芹菜的叶柄从基部沿中间切开分别插入两个烧杯中如图所示一段 sketch template
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题目为探究某环境因素对植物光合作用的影响小李同学设计了如下图所示实验甲乙装置为对照实验其中乙装置的B叶片用纸片从上下两面遮盖起来 sketch template
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某同学进行了如下探究实验 取两只大小相同的水槽编成甲乙两组内放等量的同种河水再在两个水槽内放入等量的大小和育状况相的小蝌蚪 sketch template
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下面是兴趣小组的同学设计的两个实验装置都是用来观察植物的蒸腾作用的请你根据示意图分析解决问题1甲乙两个实验装置中 更合理学．理由 sketch template
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小明在“探究不同液体的吸热情况 试验中用了如图甲所示的两套完全相同装置．他按实验要求分别对甲和乙两种液体物质进行加热．实验数据记录如表物质 sketch template
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同学们在学碱的化学性质时做了一个如图所示的甲乙两个实验．1写出乙实验的化学反应方程式Na2CO3 CaOH2=CaCO3↓ sketch template
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同学们在学习碱的化学性质时做了如下图所示的甲乙两个实验 写出乙实验的化学反应方程式 反应过程中产生的现象是 实验结——青夏教育精英 sketch template
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如图所示，甲、乙两个质量相等的均匀实心正方体放在水平地面上，已知铜的密度大于铁的密度，可能使甲和乙对地面的压强相等的方法是（ sketch template
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题目在探究“比较不同物质吸热能力 的实验中小明用如图所示图两个相同的装置做实验实验器材还有天平和秒表 实验中应量取质量的甲乙两种 sketch template
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题目质量相等由不同物质组成的甲乙两个物体升高相等的温度时甲吸收的热量比乙吸收的热量多则 A 甲的比热容大于乙的比热容 B sketch template
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小梦所在的实验小组设计了如图所示的甲乙两种装置来“探究冰熔化时温度的变化规律 ．1实验中都需要用到的测量仪器是温度计和秒表．2该 sketch template
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夏天小丽将冰水和热水分别注入常温下的两只透明烧杯中如图2所示一会儿现两只烧杯的杯壁上都有一部分出现小水珠变糊了。针对这一现象下列 sketch template
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图为某同学设计的探究种子萌的实验．在AB两个烧杯中分别放入等量的清水在两根相同的玻璃棒上各捆上3完整的大豆种子并分别编号．将甲烧杯放 sketch template
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9．甲乙丙丁四位同学进行如下操作你认为正确的是 A．甲用冷水冷却加热过的试管B．乙将药品放在天平右盘的纸称量C．丙取用硫酸溶液时 sketch template
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小李同学在实验室里测量一块形不规则体积较大的矿石密度的实验中如图所示．所用的实验器材有矿石量筒水和细线之外还需要天平本实验的实验 sketch template
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小李同学先后用同样大小的力F使同一木箱分别在如图所示甲乙丙三个表面上沿力的方移动相同的距离改力F在这三个过程中所做的功分别为W甲W乙 sketch template
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两个相同的烧杯中分别装满了甲乙两种液体．将一个小球放在甲杯中小球的一部分露出液面甲杯中溢出液体的质量为m甲再将该小球放在乙杯中小球沉 sketch template
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题目1为了比较水和食用油的吸热能力小明用两个相同的装置做了如图甲所示的实验．在两个相同的烧杯中应加入初温相同 相同的水和煤油ρ sketch template
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1为比较水和煤油吸热升温性质的不同江涛用两个相同的装置做了如图甲所示的实验．在两个相同的烧杯中应加入初温相同质量相同的水和煤油 sketch template
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小李和小高同学用一瓶久置的氢氧化钠溶液和稀硫酸做中和反应的实验为了能够观察到明显现象他们先盛装10mL氢氧化钠溶液的烧杯中滴加几滴酚酞试 sketch template
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小李同学利用如图装置探究“液体内部压强的特点 ．1小李实验前现压强计U形管两边红墨水的高度不相等如图所示接下来的操作应该是C．A．再 sketch template
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为探究实验室制乙烯及乙烯和溴水的加成反应甲同学设计了如图所示的实验装置并进行了实验当温度升至170℃左右时有大量气体产生产生的气体通 sketch template
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小明同学在探究重力势能的大小与什么因素有关时，提出了如下猜想：猜想一：物体的重力势能与物体的质量有关猜想二：物体的重力势能与物体所在高度有关 sketch template
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为了比较水和空气对牛奶的冷却效果某小组的同学进行了如下的探究实验将一盒牛奶分别装入两个相同的瓶中甲瓶放在水中乙瓶放在空气中其它条件均 sketch template
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题目25℃时盛有等质量的甲乙丙三种固体的试管中分别加入等量的水充分溶解后甲乙还有剩余丙全部溶解然后将三支试管放入盛有 sketch template
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29．为了比较水和沙子吸热本领的大小小文做了如图16所示的实验在两个相同的烧杯中分别装有质量初温都相同的水和沙子用两个相同的酒精灯对 sketch template
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小明同学学习了燃料的热值后自己设计一个实验来探究煤油和菜籽油的热值的大小关系他组装了图所示的装置进行实验记录结果见下表1为了保证 sketch template
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为了比较水和沙子容热本领的大小小明做了如图所示的实验在2个相同的烧杯中分别装有质量初温都相同的水和沙子用两个相同的酒精灯对其加热实验 sketch template
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如图所示为了比较水和食用油的吸热能力某小组设计了如下实验步骤A在两个相同的烧杯中分别装入等体积的水和食用油B用两支相同规格的温度 sketch template
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【实验名称比较不同燃料的热值的大小。【实验器材铁架台、烧杯、温度计、火柴、酒精灯、水、酒精和汽油。【实验装置如图所示。【设计并进行实验 sketch template
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为了比较水和食用油吸热能力的大小小华做了如图甲的探究实验在2个相同的烧杯中分别装质量相同的食用油和水用两个相同的酒精灯对其加热实验数据 sketch template
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某生物实验小组在一块地上喷洒杀虫剂而对附的另一地则未做任何处理．随后他们在两块地上各设5块面积相同的样地．然后从每块样地中各取1m3的 sketch template
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同学们做实验的装置如图所示闭合开关先将导体ab水平用力右移动导体cd也随之运动起来．则在以上的实验中下列说法不正确的是 A．实验 sketch template