The surface of the water in the test tube is not perfectly level. How can you make the water level concave into convex?
2006-07-14 17:00:47 · 12 answers · asked by Eve W 3 in Science & Mathematics ➔ Earth Sciences & Geology
I'm pretty sure you can't get rid of the meniscus. It's caused by the polarity of the water molecules reacting to that of the glass molecules. The only thing you can do to make the surface of the water lie flat at the top of the water column, is to coat the tube with some kind of slick, neutral material.
2006-07-14 17:07:34 · answer #1 · answered by HMLB 2 · 3⤊ 0⤋
Surface tension of the water causes it to "stick" to the sides of the test tube. Thus, you get a miniscus at the bottom of the concave surface. You can change the material of the test tube to make it flat, but I wouldn't know how to make it convex.
2006-07-14 17:04:36 · answer #2 · answered by FIONEX 3 · 0⤊ 0⤋
If you overflow the test tube to a certain point, it will create almost like a bubble over the top. Which will create a convex surface.
2006-07-14 17:04:12 · answer #3 · answered by rachaelx3x3 2 · 0⤊ 0⤋
you can't. The meniscus (the top of the test tube where the water arcs) is always concave for water. It's different for other liquids. When measuring, measure from the bottom of the meniscus.
2006-07-14 17:05:19 · answer #4 · answered by fuzzygumdrop 2 · 0⤊ 0⤋
nicely the exterior water replace into polluted with the aid of many pollution released interior the lakes, oceans. eg sewage pipes in some aspects. additionally some business waste it is released into waters without being taken care of. Now some chemical components and compounds as you understand incorporate heavier and sink to the backside the place they seep into the floor and combine with the floor water. this occurs plenty in agriculture the place the fertilizers seep into the floor and impression the floor water table.
2016-11-02 02:18:07 · answer #5 · answered by ? 4 · 0⤊ 0⤋
The shape is caused by surface tension. To change the surface tension, you need a....
Surfactant.
What is a good surfactant?
Soap. Give it a try.
2006-07-14 17:04:07 · answer #6 · answered by cjmacri 3 · 0⤊ 0⤋
you can't...the level of water sticks to the content in the limit of the content :P
it's because of the cohesion of t water molecules...
you need to check the lower part of the water to see the "true" level
2006-07-14 17:04:18 · answer #7 · answered by Robert R 2 · 0⤊ 0⤋
use electrolysis to release some of the hydrogen out of the water
2006-07-14 17:05:05 · answer #8 · answered by m29white 1 · 0⤊ 0⤋
Pressure, you have to change the preasure, forever since i have done it
2006-07-14 17:03:28 · answer #9 · answered by Anonymous · 0⤊ 0⤋
turn your head upside down and look at it.
2006-07-14 17:04:32 · answer #10 · answered by 2thseeker 2 · 0⤊ 0⤋