Question

B. Explain the following terms.
1. Matter
2. Melting
3. Boiling
4. Condensation
5. Cohesive force
6. Brownian movement​

Answer 1

Answer:

Matter: everything that takes up space and has mass is matter.

Boiling:boiling happens when liquid becomes gas, forming bubbles inside the liquid volume.

Melting: Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure, which increases the substance's temperature to the melting point.

Condensation :Condensation is the process where water vapor becomes liquid.

Cohesive force :Cohesion or cohesive attraction or cohesive force is the action or property of like molecules sticking together, being mutually attractive.

Brownian movement :Brownian motion, or pedesis, is the random motion of particles suspended in a medium. This pattern of motion typically consists of random fluctuations in a particle's position inside a fluid sub-domain, followed by a relocation to another sub-domain.

Answer 2

Explanation:

Matter

Matter is the "stuff" that makes up the universe — everything that takes up space and has mass is matter. All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons.

Melting

Melting, change of a solid into a liquid when heat is applied. In a pure crystalline solid, this process occurs at a fixed temperature called the melting point; an impure solid generally melts over a range of temperatures below the melting point of the principal component.

Boiling

Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

Condensation

Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.

Cohesive force

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.

Brownian movement

Brownian movement also called Brownian motion is defined as the uncontrolled or erratic movement of particles in a fluid due to their constant collision with other fast-moving molecules.

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