Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

Home / Doubts and Solutions/ICSE/Class 9/Chemistry

Give an example of a chemical change characterized by its physical state.

Asked by Topperlearning User 28th September 2016, 10:40 AM
Answered by Expert
Answer:

In some reactions, a change of a state is observed. The reaction starts with solid or liquid reactants and ends up with gaseous products and vice versa.

Example: Ammonia gas reacts with hydrogen chloride gas to form ammonium chloride which is in a solid state.

NH3(g)  +  HCl(g) →  NH4Cl(s)

 

Answered by Expert 28th September 2016, 12:40 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Previous Question
Next Question
Your answer has been posted successfully!

Free related questions

1. Xcl2 is the choride of a metal X. state the formula of the sulphate & the hydroxide of the metal X
2.an element X is trivalent. write the balance equation for the combustion of X in oxgen
 
24th August 2016, 12:14 PM
1.   Which type of reactions are the following:-          (i)PbO2+SO2->PbSO4
                                                                                          (ii)AgNO3+NaCl->AgCl+NaNO3
                                                                                          (iii)2KClO3->2KCl+3O2
                                                                                          (iv)2H2O2->2H2o+O2
                                                                                          (v)KNO3+H2SO4->HNO3+KHSO4
                                                                                          (vi)CuO+H2->Cu+H2O
                                                                                          (vii)CaCO3->CaO+CO2
                                                                                          (viii)NH4Cl->NH3+HCl
 
 
2.    State,giving reasons,whether the substances underlined have been oxidised or reduced
 
 
(a)PbO+CO->Pb+CO2
(b)H2S+Cl2->2HCl+S
11th September 2016, 10:00 PM
1.   Which type of reactions are the following:-          (i)PbO2+SO2->PbSO4
                                                                                          (ii)AgNO3+NaCl->AgCl+NaNO3
                                                                                          (iii)2KClO3->2KCl+3O2
                                                                                          (iv)2H2O2->2H2o+O2
                                                                                          (v)KNO3+H2SO4->HNO3+KHSO4
                                                                                          (vi)CuO+H2->Cu+H2O
                                                                                          (vii)CaCO3->CaO+CO2
                                                                                          (viii)NH4Cl->NH3+HCl
 
 
2.    State,giving reasons,whether the substances underlined have been oxidised or reduced
 
 
(a)PbO+CO->Pb+CO2
(b)H2S+Cl2->2HCl+S
11th September 2016, 9:59 PM
Why air and tap water considered as mixtures?
 
24th September 2016, 12:26 AM
An electrovalent compound formed frm an element in period 3 and hydrogen
8th December 2016, 12:29 PM
RELATED STUDY RESOURCES :
ICSE Class-9 QUESTION ANSWERS

Chat with us on WhatsApp