CHEMISTRY 8th 1. Name the three states of matter. Give one example of each. 2. What are the two ways in which the physical state of matter can be changed? 3. Explain how gases can be liquefied? 4. What is sublimation? Give examples.
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1.solid,liquid,gas
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ice water steam
2.evaporation,sublimation
3.condensation
4.the process of converting gas into solid and vice versa.Ex:ammonium chlorine
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Answer:
Q1
solid - Wood
liquid- water
gas -Oxygen
Q2
evaporation, condensation.
Q3
Gases can be liquified by increasing pressure and decreasing temperature or by the process of condensation.
Q4
When the solid is directly changes into gas and vice versa without changing into liquid . this process is called Sublimation. For eg Ammonium chloride
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