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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.
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.
How does shape affect distance?
Shape affects distance by influencing the path that an object takes to travel between two points. For example, a straight line will always be the shortest distance between two points, regardless of the shape of the objects involved. Curved or irregular shapes will result in longer distances when traveling between points.
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.
Why does it stay suspended at the edge of the leaf?
Water droplets could stay suspended at the edge of a leaf due to a combination of surface tension, adhesion, and cohesion forces. The surface tension of water helps it resist gravity, while adhesion allows the water droplet to stick to the leaf. Cohesion within the water molecules helps the droplet maintain its shape and not spread out.
Is adhesion responsible for the attraction between water molecules and the glass sides of a graduated cylinder?
Yes, adhesion is responsible for the attraction between water molecules and the glass sides of a graduated cylinder. Adhesion is the force of attraction between different molecules, in this case, water molecules and the glass molecules. This attraction causes the water to stick to the glass surface instead of forming a perfect dome shape.
Why does water stick to copper pennies?
Water sticks to copper pennies due to a phenomenon called adhesion. The molecules in water are attracted to the molecules on the surface of the copper penny, causing them to stick together. Additionally, the shape of the copper penny provides a large surface area for the water molecules to adhere to.
What holds the cells together in volvox?
In Volvox, cells are held together by tight junctions and cell adhesion proteins. These structures provide structural support and help maintain the colony's shape. Additionally, extracellular matrix materials secreted by the cells also play a role in cell cohesion.
Which of the following describes cohesive forces of water?
Cohesive forces of water are the attractions between water molecules that allow them to stick together, forming hydrogen bonds. These forces create surface tension in water, enabling it to bead up on surfaces or flow smoothly in thin streams.
What is territorial morphology?
A state's geographical shape, which can affect its spatial cohesion and political viability.
In what way does cohesion play a part in how many drops of water can be dropped onto the head side of a penny?
Cohesion is the attraction between water molecules that allows them to stick together. This cohesion enables the water drops to pile up on top of each other on the head side of a penny without spilling over the edge. The surface tension created by cohesion allows the drops to form a dome shape on the penny before spilling.
What are the structural features that influence the shapes of cells?
The shapes of cells are influenced by structural features such as the cytoskeleton, cell membrane, and cell adhesion molecules. The cytoskeleton provides support and maintains cell shape, while the cell membrane controls the cell's boundaries and interactions with the environment. Cell adhesion molecules help to maintain connections between cells and shape tissue architecture.
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.
Why does a small amount of water on placing over a glass plate forms an oval shaped drop?
When water is placed on a flat surface like a glass plate, surface tension causes it to minimize its surface area by forming a spherical shape. However, when the amount of water is very small, gravity plays a larger role in shaping the drop and causes it to form an oval shape instead of a perfect sphere. This is due to the balance between surface tension and gravity.
What is the difference between other planktons?
their shape and size is different
