Which will conduct electricity: a solution of water and (nh₄)₂s or a solution of water and c₆h₁₂o₆?

A solution of water and (NH₄)₂S

Explanation:

In a solution , the electricity can pass from it , if there is presence of free ions , as they are mobile and helps to conduct the electricity .

Therefore , the present of free ions is necessary for a solution to conduct electricity.

Hence, from the given options ,

Solution of water and (NH₄)₂S will conduct electricity as (NH₄)₂S will dissociate completely to the respective ions as they are dissolved in water , and the ions will help to conduct electricity.

Whereas ,

Solution of water and C₆H₁₂O₆ will not conduct electricity , as C₆H₁₂O₆ in water  will not dissociate completely , and does not produce ions , hence , won't conduct electricity.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.