whenthesolid A isaddedto water, itdissolveswiththeevolutionof alotof heatand makinglittleexplosionsto fromtwoproducts B and C,The propertiesof productsB and Care entirely differentfrom thoseof solidA aswellas water,Moreover,ProductsB and Ccannotbereconvertedintosolid A andwater,whenanother solidD isaddedto water ,itdissolveswiththeabsorptionoflittle heatto forma product E whichcoolsdown ,Theproduct Esows thepropertiesof both, solid D aswater,Moreover, product E can beconverted intosolid D andwater . ( a)whattypeofchangeoccurswhensolid A isdissolvedin water? why? (b)whattypeof changeoccurswhen solid D isdissolvedin water? why(c )Namea metalwhichyou think couldbehavelike solidA .Also nametheproducts B and c . ( d)Namethesolid D ifti isthe onewhichis usedin makingordinary dry cells . ( e)namethe process by whichD canbe recoveredform E .

whenthesolid A isaddedto water, itdissolveswiththeevolutionof alotof h

1.	whenthesolid A isaddedto water, itdissolveswiththeevolutionof alotof heatand makinglittleexplosionsto fromtwoproducts B and C,The propertiesof productsB and Care entirely differentfrom thoseof solidA aswellas water,Moreover,ProductsB and Ccannotbereconvertedintosolid A andwater,whenanother solidD isaddedto water ,itdissolveswiththeabsorptionoflittle heatto forma product E whichcoolsdown ,Theproduct Esows thepropertiesof both, solid D aswater,Moreover, product E can beconverted intosolid D andwater . ( a)whattypeofchangeoccurswhensolid A isdissolvedin water? why? (b)whattypeof changeoccurswhen solid D isdissolvedin water? why(c )Namea metalwhichyou think couldbehavelike solidA .Also nametheproducts B and c . ( d)Namethesolid D ifti isthe onewhichis usedin makingordinary dry cells . ( e)namethe process by whichD canbe recoveredform E .
Answer» ANSWER :(a)chemicalchange; becausetheporpertiesof PRODUCTS B andCareentirely differentfromthoseof SOLID A and water(b)physicalchange; BecausetheproductEshowsthepropertiesof both, solid D andwater ( c)sodium ;sodiumhydroxideand hydrogen (d)Ammoniumchloride( e)EVAPORATION