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.

http://en.wikipedia.org/wiki/Mixture

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