Question

Define the following (i) Melting (ii) Condensation (iii) Sublimation and condensation (iv) melting point (v) boiling point

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Answer 1

Answer:

1. 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

2.Condensation is the change of the physical state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle.

3.Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.The term phase transition is most commonly used to describe transitions between solid, liquid, and gaseous states of matter, as well as plasma in rare cases. A phase of a thermodynamic system and the states of matter have uniform physical properties

4. The melting point of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.

5.The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure.

Explanation:

Answer 2

Answer:

1. Melting - To change or make something to change from solid state to it's liquid state by the means of heat.
2. Condensation - the process of changing a gas to liquid is known as condensation.
3. Sublimation - the process of changing the solid directly into gaseous state.
4. Melting point - the temperature at which the solid changes into liquid state.
5. Boiling point - the temperature at which the liquid starts to boil.