It doesnt dissolve in cold water because of the salt that hot cocoa contains
In general, cocoa will dissolve more readily in water. There are stir-in coffees, though, which easily dissolve in hot water.
because the chocolate dissolves the marshmallows inside to the outside
When you plop the marshmallow into your hot chocolate the marshmallow absorbs the hot chocolate. When you do that the marshmallow gets soggy
a marshmallow is made up of corn syrup which increases its ability to dissolve and soda pop is caffeine which can dissolve it fastest
When energy from hot cocoa melts a marshmallow placed in it, it is a process of heat transfer known as conduction. Conduction is the transfer of heat through direct contact between two objects at different temperatures. In this case, the higher temperature of the hot cocoa causes the marshmallow to absorb the heat energy, leading to its melting.
Rice Krispies, Chocolate, Marshmallow
Generally solubility increase with temperature; cocoa is only partially soluble in water.
I believe you are asking 'is hot cocoa better hot or cold'. If you make 'hot cocoa' with cold milk the cocoa will not dissolve and you will end up with lumpy not very well mixed chocolate milk.
I have a pretty good recipe ---- Swiss Miss (marshmallow), french sugar, hot water, a little milk, after stirring it add cinnamon and whipped cream. My kids love it and so do I.
Hot cocoa is a liquid. It is a mixture of cocoa powder, sugar, and milk (or water), which form a homogenous liquid solution when combined. The cocoa powder and sugar dissolve in the liquid (milk or water) to create a uniform mixture, making it a liquid.
The cocoa powder is the solute, and the milk is the solvent.- - - - -Cocoa powder doesn't dissolve in milk. It forms a "suspension." The milk is a carrier.