Delhi Public School, Kurukshetra
Class VI (holidays assignment)
Science
State whether the following statement is true or false. Why do you think this way?
Water can be separated from sand by sublimation.
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false.
sublimation is a process of change of physical state of a substance from solid phase to the gaseous phase directly without going through the liquid phase in between. When a substance is at its triple point - a particular temperature and pressure - , or below the triple point, then a solid goes directly into gas.
From sand, water can be separated by processes: evaporation and condensation OR the process called distillation.
sublimation is a process of change of physical state of a substance from solid phase to the gaseous phase directly without going through the liquid phase in between. When a substance is at its triple point - a particular temperature and pressure - , or below the triple point, then a solid goes directly into gas.
From sand, water can be separated by processes: evaporation and condensation OR the process called distillation.
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