Thursday, 9 August 2018

Is Matter Around Us Pure? - Worksheet - CBSE Class 9 Chemistry (#cbsenotes) (#eduvictors)

Is Matter Around Us Pure?

Is Matter Pure? - Worksheet - CBSE Class 9 Chemistry (#cbsenotes) (#eduvictors)

Worksheet
Fill in the blanks

1. Anything which has mass and occupies space is called ________.


2. Matter can be classified as ____ substances or mixtures


3. A/An _______ is a basic form of matter which cannot be broken down into simpler substances by any physical or chemical means.


4. _____ are one category of elements that have lustre, conduct heat and electricity and are sonorous.


5. ________ are elements having properties intermediate between those of metals and non-metals

6. A ________ is a pure substance composed of two or more elements chemically combined in a fixed proportion. It can be broken down into simpler substances by chemical or electrochemical methods.


7. Mixtures whose components mix completely with each other to make a uniform composition are called _________ mixtures.


8. The ability of a substance to dissolve in another substance is called ________.


9. A solution that has dissolved maximum amount of solute at any particular temperature is called a ________ solution.


10. ________ are mixtures with particle sizes from 1 nm to 1000 nm.


11. Scattering of a beam of light when light is passed through a colloidal solution is called the _________ __________. 13

12. A colloid in which both dispersed phase and dispersed medium are in the liquid state is called as a/an _________.


13. Volatile compounds can be separated from non-volatile compound by __________.


14. _________ Distillation is used for separating liquids having a difference in boiling points of less than 25 K.


15. This process of separating the suspended particles of an insoluble substance, from a liquid, by rotating it at high speed is called ___________.


16. Any change that involves the formation of a new substance and leads to a transformation of chemical identity is called ________ ________.


17. A colloid in which dispersed phase is either liquid or a solid and dispersed medium is a gas is called as _________.




Answers:
1: matter
2: pure
3: element
4: Metals
5: Metalloids
6: compound
7: homogeneous
8: solubility
9: saturated
10: Colloids
11: Tyndall effect
12: emulsion
13: sublimation
14: Fractional
15: centrifugation
16: chemical change
17: aerosol

☛See also:
Chemical Formula for Daily Use Material
Ch 2 - Is Matter Around Us Pure? (Q & A)
Ch 2 - Is Matter Around Us Pure (MCQs)
Ch 2 - Is Matter Around Us Pure (Worksheet)