ASSESS YOURSELF
1. Name the two conditions for the
Interconversion of states of matter
2. How does a liquid change into
its gaseous state?
3. Explain any two physical
properties of matter
4. Define the following terms:
(1) Liquefaction (1) Fusion
(ii) Solidification
Answers
Answer:
1.All matter can move from one state to another. This is known as interconversion of the states of matter. Matter can change from one state to another when specific physical conditions change– i.e. temperature and pressure of the substance
2.As a liquid is heated, its particles starts gaining energy and move more vigorously which increases the gaps between the particles and decreasing the force of attraction. Ultimately a liquid changes into gaseous state
3.Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others
4.(a)Liquefaction is a phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading. Liquefaction and related phenomena have been responsible for tremendous amounts of damage in historical earthquakes around the world.
(b)Fusion is the process of combining two or more things together into one
(c)Solidification, also known as freezing, is a phase change of matter that results in the production of a solid. Generally, this occurs when the temperature of a liquid is lowered below its freezing point. ... Solidification is nearly always an exothermic process, meaning heat is released when a liquid changes into a solid.