The science of surface tension explainedLearn about surface tension and compare the surface tensions of different liquids, including water, alcohol, mercury, and soap bubbles. See all videos for this article surface tension; soap bubblesSoap bubbles demonstrate the property of surface tension. ...
[1] D[2] B[1] 【答案】D【核心短语/词汇】surface tension 表面张力【翻译】水的表面张力被手指改变了。【解析】A.胡椒 B.盘子 C.洗洁精 D.手指 由题意知,本题考查实验,实验中手指是改变水的表面张力的,故选D。[2] 【答案】B【核心短语/词汇】the joy of science科学的乐趣【翻译】我们能从这本...
Surface tension exists on the surface of water because water molecules like to stick to each other. This force is so strong that it can help things sit on top of the water instead of sinking into it, like our pepper and soap experiment below. The high surface tension of water allows a ...
LAB: SURFACE TENSION Introduction: Due to hydrogen bonding, water molecules tend to stick together. Surface tension refers to water's ability to "stick to itself". Surface tension can be measured and observed by dropping water (drop by drop) onto a penny. The number of water drops that can...
water used in an industry includes impurity such as salt. In this study, effect of salt kinds and concentrations on surface tension of water was investigated under microwave irradiation. It has found that surface tension decreased quickly, while temperature increased during microwave. Once the radiati...
Pallas NR, Pethica BA (1983) The surface tension of water. Colloids Surf 6:221-227. doi:10.1016/0166-6622(83)80014-6Pallas N, Pethica B (1983) The surface tension of water. Colloid Surf 6:211–227Pallas N R; Pethica B S.The surface tension of water.Colloid Surf A.1989.369-372...
surface tension of waterhands-on experimentscientific misconceptionteaching practiceThe paper is a sharing of real practical teaching experience for some grade-6 gifted students to hunt the definition of horizontal plane. The researcher created 5 experiments concerning the knowledge of surface tension of ...
The surface tension-temperature relationship for water is smooth and linear when account is taken of the expansion of the surface with temperature. This plot permits the calculation of thermodynamic properties for 1 square centimeter of surface. Molar surface quantities are derived by assuming a hexago...
Recent biological studies on water strider insects revealed how they maintain stability and maneuver on the surface of water. While macroscale bodies use buoyancy, these very small insects use surface tension force to balance their weight on water. This paper proposes a biologically inspired miniature...
SELWOOD and Frostobtained for mixtures of varying proportions of ordinary and heavy water different values of surface tension, the surface tension becoming smaller as the DO concentration increased. These authors compute by extrapolation that pure heavy water has a surface tension of 67.8 dyn./cm. ...