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Cohesion the force of attraction by which the molecules of a solid or liquid tend to remain together (clinging power of the same substance)
Adhesion: intermolecular attraction between substances that are unlike and in surface contact, causing them to cling together (like glue to paper)
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What allows capilrity to happen?
Capillarity is the result of intermolecular forces, particularly adhesion and cohesion, between a liquid and a solid surface. Adhesion causes the liquid to climb the walls of a narrow tube, while cohesion allows the liquid to maintain its shape and climb against gravity. This phenomenon is seen in small tubes or porous materials where the forces overcome gravity.
How milk retain its shape when it is poured from a glass to a bowl?
Milk retains its shape when poured because of its cohesive and adhesive properties. The cohesion of milk molecules causes them to stick together, while the adhesion between the milk and the glass or bowl helps maintain its shape as it flows. Additionally, the surface tension of the milk also plays a role in keeping it together when poured.
Drops on a penny?
The surface tension of water allows drops to sit on a penny without overflowing. This is due to the cohesion of water molecules, which causes them to stick together and form a dome shape on the penny. Additionally, the adhesive forces between the water and the penny help to keep the water droplet in place.
What are the properties of the h2o linear molecule?
The H2O linear molecule has two hydrogen atoms bonded to one oxygen atom in a straight line. It is a polar molecule with a bent shape, resulting in a slight negative charge on the oxygen atom and slight positive charges on the hydrogen atoms. This polarity gives water its unique properties, such as high surface tension, cohesion, and adhesion.
Why do beads of water often from on a slippery surface such as a freshly waxed car?
Beads of water form on a slippery surface like a freshly waxed car because the surface tension of the water causes it to minimize contact with the surface, forming droplets. The hydrophobic nature of the wax repels water, causing it to bead up rather than spread out. This phenomenon is known as the lotus effect.
