Science 22/06/2020 Virtual Online Classes Ch-2 Acid Base and Salts. Class homework and class detail.

Science 
22/06/2020
Virtual Online Classes

Ch-2 Acid Base and Salts.


Topic taught:

  • Baking soda(TODAY)
  1. preparation 
  2. uses and properties
  • washing soda(sodium carbonate) (TODAY)
  1. preparation 
  2. uses
  • water crystallisation(TODAY)
  • plaster of paris(TODAY)

Home work :

NOTE:
  • solve the  worksheet 1 and  worksheet 2 (M.C.Q)  from between us portal (After Completing it submit((deadline)Till Wednesday) on between us only).

Question:
  • Explain preparation of plaster of paris and state its uses.
  • Explain water of crystallisation and give two examples.
  • Explain the formation of washing soda.
  • state the uses of   1.baking soda and 2.washing soda
QUESTION :
  • Solve the Textual exercises 

IMP ACTIVITY:


Question:




Extra Question:
  • Salt A commonly used in bakery products on heating gets converted into another Salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky . Identity A,B and C.
  • Explain why plaster of paris should be stored in  a moisture- proof container.
Question:
  • Form the mind of Salts.(for example)



NOTES USED:







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