methods of separating Flashcards
how to you work out the rf value
divide the height of the compound by the height the solvent reached
what is the mobile phase
the phase where the compounds separate as they travel up the paper
what is the stationary phase
the paper
what is the first step in cleaning water
screening to remove large objects like twigs and leaves
what is the second step in cleaning water
filtration through sand and gravel
what is the third step in cleaning water
sedimentation to remove small insoluble particles
what is the fourth step in cleaning water
chlorination to remove bacteria and other micro organisms
what is another way of getting small insoluble particles out of the water
adding alum which makes the particles clump together and settle on the bottom
what is a compound
a substance in which two or more elements are chemically bonded
what is a mixture
two or more substances that are not chemically combined that can also be separated by physical means
what is the solute
the substance that dissolves in a solution
what is the solvent
the liquid that dissolves a solute to make a solution
what is fractional distillation
a separation technique used to separate miscible liquids with different boiling points
what is distillation
a seperationtechnique used to obtain the solvent from a solution.§
