So we are gonna learn a new topic, about using physical methods to separate mixtures. Yay! :)
Notes taken in class!
In nature, almost all substances are mixtures.
Mixtures need to be separated into pure substances for
-Characterization
-Identification
-Production
It is impossible to obtain a 100% pure substance.
DETERMINING THE DEGREE OF PURITY
-the melting points and boiling points of elements are unique
-chromatography
PAPER CHROMATOGRAPHY (eg. separates dyes from ink)
-separate a mixture of solutes with different solubility and degree of absorption
-uses a solvent moving over a porous or absorbent medium
No comments:
Post a Comment