Important points and diagram of chapter 2 is matter around us pure
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Difference between 1 metals and nonmetals
2 physical and chemical changes
define metalloids
DIAGRAMS
1 water purification system
2 distillation
3 fractional distillation
4 separating funnel
5 sublimation
6 separation of component of air
2 physical and chemical changes
define metalloids
DIAGRAMS
1 water purification system
2 distillation
3 fractional distillation
4 separating funnel
5 sublimation
6 separation of component of air
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