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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: xiankai on August 17, 2005, 08:12:03 AM

Title: water
Post by: xiankai on August 17, 2005, 08:12:03 AM

why does water always stick to containers? its near impossible to shake it off. no amtter how hard u pour, there is always water left in the container

Title: Re:water
Post by: ATMyller on August 18, 2005, 04:16:20 AM

With small amounts of water (droplets etc.) the force of surface tension is greater than gravitational pull or forces you manage to induce with shaking.

Title: Re:water
Post by: xiankai on August 18, 2005, 04:34:19 AM

what is surface tension? in which direction does it act?

Title: Re:water
Post by: Mitch on August 18, 2005, 05:30:24 AM

Also look into the chemical property of adhesion.

Title: Re:water
Post by: xiankai on August 19, 2005, 01:50:30 AM

what kind of adhesion is it? i dont think water adheres to the container chemically, yet there also doesnt seem to be a physical force  ???

Title: Re:water
Post by: Donaldson Tan on September 01, 2005, 12:21:20 AM

it's a type of intermolecular bonding, between water molecules and the container surface

Title: Re:water
Post by: Blueshawk on September 01, 2005, 12:30:07 AM

the capillary effect is based on water-surface interaction.

its is in part due to the polar nature of water

EDIT: spellcheck

Title: Re:water
Post by: Mitch on September 01, 2005, 01:12:58 AM

There is no capillary action involved on large surfaces like a cup or container. It will be do to the macroscopic concept of adhesion described on the molecular level by Geodome.

Title: Re:water
Post by: xiankai on September 01, 2005, 03:50:02 AM

is that kind of intermolecular bonding covalent? (making a guess... i dont really know much about these stuff)