Chapter 1: Matter and Its Composition, Class 7 Chemistry ICSE PDF Download

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Test – Chemistry, Chapter-1, Matter and Its Composition Class- VII (ICSE) 
 
Total Marks:40         Time : 2 hours 
ALL QUESTIONS ARE COMPULSORY 
FOR ONE SPELLING MISTAKE ( ¼ ) MARK WILL BE DEDUCTED  
I.Fill in the blanks by correct words [5] 
a. On heating, solids first change to ______________ state and then to ___________ 
state. 
 
b. The liquids take the shape of containing _____________, because the molecules are 
___________ to move. 
 
c. The process of conversion of a gas into a liquid is called_______.  
d. The state of matter which has definite shape and definite _____________are called 
solids 
 
e. The gaseous state directly formed from a solid on heating is called ______________  
f. The force of attraction between the similar kind of molecules is called 
_______________ 
 
g. ____________ state of matter consists of electrically charged particles of gaseous 
matter. 
 
h. The particles of matter are in continuous motion and such have ____________energy.  
II. Statements given below are incorrect. Write the correct statements. [5] 
a. A liquid can have more than one free surface.  
b. Intermolecular spaces in case of solids are too large  
c. Solids have definite volume, because its molecules are free to move  
d. Gases can flow, but liquids cannot.  
e. Gases are highly compressible, as they have very small intermolecular spaces  
III. Write following answers   
1 a. Define matter.  [3] 
   b. Name three states of matter  
   c. State three characteristics of matter  
2. State FIVE postulates of Kinetic Theory of matter [5] 
3. a. Define the term Solid. [3] 
    b. Why solids have definite shape, but liquid does not have? - Explain  
4. a. Why do liquids flow? Explain on the basis of Kinetic Theory of matter [4] 
    b. why Gases are highly compressible?  
IV. Define the following: 
a. Adhesive Force 
b. Element 
c. Atom 
d. Molecule 
e. sublimation  
[5] 
V. State the following: 
a. Which of the following substances sublime: 
i. Ice             ii. Iodine    iii.Mercury   iv. Ammonium Chloride    v. Camphor 
 
[2] 
b. Compare the properties of Solids, Liquids and Gases [at least 5 points] [5] 
c. Name the following: 
i. Space between the molecules of matter 
ii. A type of matter having definite shape and definite volume 
iii. The temperature at which liquid is converted into vapour. 
[3]