Post on 08-Jul-2015
By Aditi Atmasidha
Elements
Compounds
Mixtures
Separation Techniques
Elements are building blocks of
substances.
Everything is made up from elements.
Atoms of same element are alike while
atoms of different elements are different.
Example: atoms of Copper are different
than atoms of Iron.
When 2 or more elements mix together in
fixed proportion.
Energy is supplied or given out in the
formation of compound.
Properties of compound is different than
constituent elements.
Constituent elements are not gained by
simple process.
H2O molecule is shown in the above pic.
When 2 or more elements or 2 or more
compounds mixed in any proportion.
Original substances retain their own
properties.
Original substances can be obtained by
simple physical process.
Filtration
Decantation
Evaporation
Distillation
Centrifugation
Chromatography
http://library.thinkquest.org/11430/resear
ch/techniques.htm
http://www.youtube.com/watch?v=nxR
GahK7B48
Classify the following into elements,
mixtures and compounds:
tea hydrogen methane oxygen
chlorine bromine carbon-di-oxide
soap solution air lime water
Define the following :-
element atoms compounds mixtures
How will you separate salt from sea
water? Name the process.
Elements: hydrogen, oxygen, chlorine,
bromine
Compounds: methane, carbon-di-oxide,
lime water
Mixtures: tea, air, soap solution
Check in the previous slides
Check in the previous slides
Names Good Very good Excellent
Mam
Josephine
Shreya
Mitali
Hyun
Thee