Answer :
Final answer:
Distillation and crystallization separate mixtures using physical properties, while filtration removes solids from fluids. Chemical reactivity can also aid in separation through changes in physical state or chemical reactions.
Explanation:
Distillation and crystallization are two physical methods used to separate mixtures based on differences in physical properties such as boiling points. Distillation relies on differences in volatilities to separate substances, while crystallization separates components based on their ability to form crystals.
Filtration is another important method for separating mixtures, where solids are separated from fluids by passing through a medium that only allows the fluid to pass, yielding a filtrate.
Chemical methods like reactivity, as seen in reactions involving SiO₂ and NH in samples, can also be employed for separation by utilizing changes in physical state or chemical reactions.
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