Chapter 1 Chemistry
(Matter in our surrounding)
QI. Give reason for existence of the three states of matter?
Q2 List two properties that liquids have in common with gases?
Q3. To which physical state of matter do the following statements apply:-
(i)Incompressible, no fixed shape
(ii) Incompressible, high M.P.
(iii) Compressible, no definite volume
(iv) Incompressible, highly fluid
Q4 At what temperature do solid, ice & liquid water co-exist together?
05 Name two gases which are supplied in compressed form in homes and
hospitals.
Q6 What is the difference between gas and vapour?
27. What is common between three states of matter?
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Answers
Answer
A1 Matter exists in three states because of the intermolecular Force of attraction, intermolecular spaces and the brownian movement
A2 i) They can flow
ii) They have no fixed shape
A3 i) Liquid
ii) Solid
iii) Gas
iv) Gas
A4 0 degree Celsius
A5 LPG and Oxygen
Answer:
Q1) this is because in all the states of the better the interparticle force of attraction is different if it is tightly packed and it is solid if it is loosely packed as compared to solid then it is liquid and when it is very loosely packed when it is gas
Q2) fluidity rigidity shape
Q3) (1) liquids
(2) solid
(3)gas
(4)liquids
Q4) at 0* c
Q5) LPG and CNG
Q6) gas ) (1) it is orignal state
(2)they are stable
(3)they are gas at room temperature
vapor )(1)they are not orignal state
(2) they are not stable
(3) they brought to this state by changing temperature
Q7) their characteristics like
1) matter is made up of particles and these particles are very very small
2) particles of matter have spaces between them
3) particles of matter attract each other
4) these particles are moving continuously
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