Table of Contents
- 1 What force acts on particles at the surface of a liquid?
- 2 What is the tendency of a liquid to minimize its surface area called?
- 3 How is the surface tension of a liquid explained on the basis of intermolecular forces?
- 4 What is cohesive force in chemistry?
- 5 What is the movement of water?
- 6 What forces drive the movement of water?
- 7 What causes surface tension in a liquid?
- 8 What is sursurface tension?
What force acts on particles at the surface of a liquid?
The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.
What is the tendency of a liquid to minimize its surface area called?
Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to float on a water surface without becoming even partly submerged.
What force moves the water to the surface?
Capillary Action …..in Action! Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension.
What inward force at the surface of the liquid that causes the liquid to behave as if a stretched elastic membrane covered its surface?
5.2 Surface tension and wetting The net effect is an inward force at its surface that causes the liquid to behave as if its surface were covered with a stretched elastic membrane. Surface tension has the dimension of force per unit length or of energy per unit area.
How is the surface tension of a liquid explained on the basis of intermolecular forces?
The surface tension of a liquid results from an imbalance of intermolecular attractive forces, the cohesive forces between molecules: A molecule in the bulk liquid experiences cohesive forces with other molecules in all directions. A molecule at the surface of a liquid experiences only net inward cohesive forces.
What is cohesive force in chemistry?
Cohesion (from Latin cohaesiō “cling” or “unity”) or cohesive attraction or cohesive force is the action or property of like molecules sticking together, being mutually attractive.
What is force of cohesion?
cohesion, in physics, the intermolecular attractive force acting between two adjacent portions of a substance, particularly of a solid or liquid. It is this force that holds a piece of matter together. Intermolecular forces act also between two dissimilar substances in contact, a phenomenon called adhesion.
What is the tendency of how well the liquid flows?
Viscosity is a measure of how much a liquid resists flowing freely. A liquid that flows very slowly is said to be more viscous than a liquid that flows easily and quickly. A substance with low viscosity is considered to be thinner than a substance with higher viscosity, which is usually thought of as being thicker.
What is the movement of water?
Movement of Water. Movement of Water. Surface movement includes rivers, streams, creeks, lakes, ponds, and human-made “flood” control. All surface water is trying to reach sea level due to gravity. As water flows in channels, the streambed and banks of the channel will resist the flow of water.
What forces drive the movement of water?
Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds. Energy from the sun and the force of gravity drive the continual cycling of water among these reservoirs. As the water is heated, it changes state from a liquid to a gas. This process is called evaporation.
What is cohesive and adhesive forces?
Force of attraction between molecules of the same substance is called cohesive force. Force of attraction between molecules of the different substances is called adhesive force.
What are the forces of cohesion and adhesion?
Explanation: The force of cohesion is defined as the force of attraction between molecules of the same substance. The force of adhesion is defined as the force of attraction between different substances, such as glass and water.
What causes surface tension in a liquid?
The attraction forces between particles in the surface layer and the particles in the bulk of the liquid, which tends to minimize its surface area, causes surface tension. Due to the surface tension, the surface of a liquid allows it to resist an external force due to the cohesive nature of its molecules.
What is sursurface tension?
Surface Tension is the tension that acts on the surface of the liquid, due to the attraction of the particles of the surface area by the underlying particles in the interior of the liquid that tends to minimize the surface area. The unit used to measure surface tension is dynes/cm.
What is the dimensional formula for surface tension?
Dimensional Formula of Surface Tension The formula of Surface tension = F/L Also, we know that Force = ma Putting this value in the equation, we get