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Pure substances and Mixtures

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by

Paula Klik

on 2 October 2015

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Transcript of Pure substances and Mixtures

Pure Substances and Mixtures
What are we going to learn today?
What are pure substances?
Pure Substance
Matter that consists of only one specific particle
Mixture
Matter that consists of 2 or more separate particles mixed together
by Paulina Klik
What are mixtures:
homogenous and heterogeneous?
Can mixtures be purified? and How?
Heterogeneous Mixture
(mechanical mixture)
Homogeneous Mixture
A mixture where you can see the different parts with the naked eye. It can be separated by mechanical means
(Solution)
A mixture where you CANNOT see the different parts with the naked eye. It can be separated by chemical means (evaporation, heating or melting)
Solutions
look the same to the naked eye
and
Pure substances
?
?
What are mixture phases?
Phases
Mixtures can have different phases:
Heterogeneous
mixtures
Solutions
Separation of Mixtures
Can be done using
physical properties of substances
?
What are some of the physical properties we could use?
absorption
boiling point
density
freezing/melting point
magnetism
Some techniques to separate the mixtures
filtration
distillation
evaporation
spinning/centrifuging
and others
decantation
Full transcript