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chemistry adda: Class–IX CHEMISTRY Chapter-2:IS MATTER AROUND US P...

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Separating the Components of a Mixture
Importance of separation--> To study and to use the individual components of a mixture
Q. What would happen if you were to take a saturated solution at a certain temperature and cool it slowly. 
Ans. Different substances in a given solvent have different solubilities at the same temperature. So on cooling substances start to precipitate out.
Q. What is suspension?Write its properties?
Ans: Suspension:Non-homogeneous systems, in which solids are dispersed in liquids, are called Suspensions so It is a heterogeneous mixture.
Properties of a Suspension---
• Suspension is a heterogeneous mixture.
• The particles of a suspension can be seen by the naked eye.
• The particles of a suspension scatter a beam of light passing through it and make its path visible.
• The solute particles settle down when a suspension is left undisturbed, that is, a suspension is unstable.
* They can be separated from the mixture by the process of filtration.
Q. How can we separate colour component of from ink(mixture.)?
Ans: By evaporation method: Water (Solvent) has got evaporated and residue color left over.
Conclusion: we can separate the volatile component (solvent) from its non-volatile solute by the method of evaporation.
Q. How can we separate cream(fat)  from milk ?
For full study Click given link
Class–IX CHEMISTRY Chapter-2:IS MATTER AROUND US 


Further study search related
Jsunil's Chemistry: 
Is matter around us pure solved questions 
How to separate,
 i) Sulphur from a mixture of sulphur and sand. 
ii) Black CuO from a mixture of CuO and ZnO. 
iii) mixture of NH4Cl and I2
iv)the constituents of gunpowder
v) a mixture of ammonia and hydrogen

Is Matter around Us Pure Click
CBSE chapter-wise MCQ Multiple Choice Questions, Test Paper, Sample paper based on CCE pattern for class 9 science Is Matter around Us Pure. Elements, compounds and mixtures. Heterogeneous and homogenous mixtures, colloids and suspensions.

Comments

  1. manoj singhJuly 25, 2012

    The question which you have posted are exam oriented questions and its helpful for daily practice.
    cbse sample paper for class x

    ReplyDelete

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