Particle Theory And Seperation Flashcards
Physical change
no change in particles, just
the particle arrangement and energy, easy to
reverse e.g. mixing water and salt
Chemical change
A chemical reaction takes
place and a new substance is formed, very
difficult to reverse e.g. burning a matc
During a chemical reaction
the atoms
rearrange to form a new substance. Might be
seen by colour change, temperature
change, light being emitted or bubbles.
Distillation
Used to separate two liquids with
different boiling points such as
alcohol (boils at 78o
) and water
(boils at 100 o
). Also used to
separate a soluble solid from a
liquid (e.g. seawater) to give a pure
sample of each.
Chromatography
Used to separate a mixture of
dissolved substances in a
solution. E.g. the different
colours in a black marker.
Residue
the soil left in the filter paper after filtration
Filtrate
the clean water that comes after filtration
Evaporation
used to separate a soluble solid from a liquid e.g. salt and water
Solvent
the liquid that a solid is dissolved into
Solute
the solid that is left behind after evaporation
Distillation
method of separation used to separate a soluble solid and its solvent, or two miscible liquids with different boiling points
Miscible
Liquids that mix together e.g. alcohol and
water
Liebig condenser
piece of equipment used in
distillation in which cool water flows to condense steam to water
Distillate
clean water at the end of distillation
Chromatography
used to separate mixtures of substances that are in a solution e.g. dyes ink
