obtain pure substances
metimes substances in their pure form are
eded for use at home, or for research work
and other purposes. For this, even minute
amounts of other substances present have to
be separated.
ORAL QUESTIONS
compound
1. If a substance contains two or more kinds of molecules, what is it called?
2. Are most substances around us pure substances or mixtures?
3. Samples were taken from different parts of a mixture and tested. They were found to have exact)
the same properties. What kind of mixture is it?
4. If a compound has fixed melting and boiling points, what can you say about the compound?
.. Why do we need to separate mixtures into its constituents?
METHODS OF SEPARATION
be separated. The first step is to se
parate a mixture, we have to use such a the grains from the stalks. This is kn
rty that one constituent of the mixture threshing. It is done either by beat
nd the others do not. For example, to stalks on the ground or a hard sur
ate iron filings from sulphur, we can use trampling the harvested wheat or ri
operty that iron is attracted by a magnet animals, or by using a mechanical thr
Iphur is not.
The grains are then separated,
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Answer:
limit your questions oke bro and limit your words
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