C. Fill in the blanks
1. In __________
process, the free moving particles lose their energy and change straight from vapour to solid state.
2. In __________ state of matter, the particles can slide over one another.
3.__________state of matter particles possess the least amount of kinetic energy.
4. Energy possessed by a particle due to its motion is known as__________energy
5. Kinetic energy of molecules__________
with decrease in temperature.
Answers
Answer:
1.From the three states of matter, solids expand the least.
Brownian movement is maximum in gases .
Cohesive forces are negligible in gases .
Matter can change from one state to another by change in temperature or pressure.
The space between atoms(molecules) of solid is minimum .
Intermingling of molecules is called diffusion .
Ice on absorption of heat converts to 'X' a procee called melting . 'X' changes to water vapour on heating . Water vapour changes back to 'X' on condensation . The constant temperature at which ice changes into 'X' is called its fusion point .
OR
a) Sodium chloride from its solution in water Evaporation.
(b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride Sublimation.
(c) Small pieces of metal in the engine oil of a car Filtration
(d) Different pigments from an extract of flower Chromatography.
(e) Butter from curd Centrifugation.
(f) Oil from water Using separating funnel
(g) Tea leaves from tea Filtration
(h) Iron pins from sand Magnetic Separation
(i) Wheat grains from husk Winnowing
(j) Fine mud particles suspended in water Centrifugation.
Answer:
1. Solidification....
2.Liquid....
3.Solid....
4.Kinetic Energy....
5.Reduces....
Explanation:
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