Question

take some salt,sugar, plastic cups and sand . dissolve it in a glass of water . now classify each kind of changes that takes place
hint : physical changes, chemical changes, reversible change . etc ​

Answer 1

Answer:

Please mark me as briniest

Explanation:

The crystals that formed the sugar and salt, when combined with the hot water, have dissolved. The heat from the water caused the crystals to break up into pieces so small that they "disappear." We can't see the sugar and salt anymore because the water molecules have banded to the sugar and salt molecules.

Answer 2

Answer:

Explanation:

For example salt dissolving in water is usually considered to be a physical change, however the chemical species in salt solution (hydrated sodium and chlorine ions) are different from the species in solid salt. ... All chemical reactions are reversible although this can be difficult in practice.05-Sep-2018