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What is it when energy from hot cocoa melts a marshmallow placed in it?
Wiki User
∙ 11y ago
This is convection. Convection is the effect you get when hotter parts expand and have lower density than cooler parts. What you describe is "melting", with the temperature of the surrounding liquid being higher than the temperature of the marshmallow. So, heat flows from the hotter region to the cooler by conduction and eventually the temperature reaches the melting point.
I'd suggest re-arranging that.
Conduction transfers the cocoa's heat into the marshmallow, cooling the liquid in doing so.
Convection helps to maintain the process by replacing the cooled cocoa with hot.
When you place any chocolate in any fluid at a higher temperature than the melting point of chocolate, the chocolate will melt. Likea lump of ice in warm water. Convection playsno role at all- if you prevent convection by packing the fluid with small pebbles etc, the marshmellow will still melt. The heat is transferred by conduction, not convection.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoi donno
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How the energy of matter changes when it melts.?
When a solid melts, it is due to an increase in thermal energy to the temperature at which it melts.
What happens to the thermal energy when a solid melts?
Nothing.
When ice melts to form water energy is what?
Absorbed.
When a fuse wire melts the electrical energy is transfered as what 2 types of energy?
kinetic and chemical energy
What are the energy changes when ice melts?
natural gas:part ofa cleaner energy future
Energy from hot cocoa melts a marshmallow placed in it what is it?
because the chocolate dissolves the marshmallows inside to the outside
I think a member of staff at my school is part marshmallow how do I check?
Poke him with a lit match or other device, if he melts he's part marshmallow.
Why milk chocolate melts?
the reason why chocolate melts because it contains coco butter and because its has less cocoa solid
How the energy of matter changes when it melts.?
When a solid melts, it is due to an increase in thermal energy to the temperature at which it melts.
Why is energy absorbed when ice melts?
When an ice cube gains energy, it is the same as gaining heat. So if an ice cube is getting warmer, it melts.
What energy melts chocolate?
heat
When ice melts the particles of solid water energy 6 letters?
"absorb" When ice melts the particles of water -absorb- energy.
Is energy absorbed or released when a solid melts a liquid vaporizes a gas condenses and a liquid melts?
Melting and boiling (vaporization) absorb energy, freezing and condensing release energy.
What melts first ice cube or ice cream?
Think about setting each of them out on the kitchen counter for an hour. After an hour, will the ice cube be melted or the marshmallow?
Is energy released during melting?
No. When a substance melts it absorbs energy.
True or false An ice cube melts when it's mechanical energy increases?
It is false that an ice cube melts when it's mechanical energy increases.
When you burn a marshmallow is it chemical change or physical change?
Toasting a marshmallow is actually a chemical change. The marshmallow becomes black and crispy, it also no longer tastes the same. Thus, it is a chemical change.Roasting a marshmallow is an example of a chemical change. Generally when you heat food in the process of cooking, you will cause a chemical change.
