A. ruler B. thermometer C. beaker D. graduated cylinder 相关知识点: 试题来源: 解析 D。本题考查实验器材的用途。量杯(graduated cylinder)用于测量液体体积,A 选项尺子用于测量长度,B 选项温度计用于测量温度,C 选项烧杯主要用于盛放液体等,不是测量体积的工具。
解析 B。本题考查实验工具用途。量筒(graduated cylinder)用于测量液体的体积。烧杯(beaker)一般用于盛装液体。试管(test tube)用于少量试剂的反应。烧瓶(flask)用于较多液体的反应或加热。A 选项烧杯主要用于盛装,C 选项试管用于少量试剂反应,D 选项烧瓶用于较多液体反应或加热,都不是专门测量液体体积的工具。
解析 A。解析:在实验中,“graduated cylinder”是量筒,专门用于测量液体体积的。B选项“test tube”是试管,主要用于少量物质的反应等,不是测量体积的工具。C选项“beaker”是烧杯,虽然可以盛装液体,但不是专门用于精确测量体积的。D选项“flask”是烧瓶,主要用于反应或储存液体等,也不是用于测量液体体积的。
What is the mass of a 53.0 mL volume of liquid, which has a density of 2.12 g/mL?Given: *Number of solid object: 1 *Mass of solid object: 51.35 g *Initial volume of water in graduated cylinder: 28 mL *Final volume in graduated cylinder: 22 mL W...
When measuring the volume of a liquid, we use a graduated cylinder. If the liquid level reads 50 milliliters, which of the following could be the uncertainty in the measurement? A. 1 liter B. 10 milliliters C. 1 centimeter D. 1 millimeter ...
Experimental methods for the determination of the annulus centrifuge retention volume of liquid extractor, belongs to the technical field of solvent extraction. 该方法具体是:环隙式离心萃取器运行达到稳态后,快速并同时停止两相液体进料;与此同时快速拔出还在继续运转的转筒并把它移到一个容器内;然后停止转...
A. graduated cylinder B. balance C. test tube D. spatula 相关知识点: 试题来源: 解析 A。graduated cylinder 是量筒,用于测量液体体积;balance 是天平,用于称量质量;test tube 是试管;spatula 是药匙,后三个都不是测量液体体积的器材。
A. balance B. graduated cylinder C. clock D. calculator 相关知识点: 试题来源: 解析 B。本题考查测量液体体积的器材。A 选项“balance”是天平,用于称重;C 选项“clock”是时钟;D 选项“calculator”是计算器。B 选项“graduated cylinder”是量筒,用于测量液体体积,所以选 B。
In a science experiment, we often use a ___ to measure the volume of a liquid. A. scale B. tape measure C. graduated cylinder D. pencil sharpener 相关知识点: 试题来源: 解析 C。本题考查测量液体体积的器材。A 选项“scale”是秤;B 选项“tape measure”是卷尺;D 选项“pencil sharpener...
A. microscope B. beaker C. graduated cylinder D. paper 相关知识点: 试题来源: 解析 C。A 选项“microscope”是显微镜,用于观察;B 选项“beaker”是烧杯,不能准确测量液体体积;C 选项“graduated cylinder”是量筒,可以测量液体体积;D 选项“paper”是纸,不能测量液体体积。