100 degries
When roasting a marshmallow the transfer of heat from the flame to the marshmallow is radiation.Radiation is the transfer of heat through energy waves. It can actually be considered conduction as well if you place the marshmallow into the flame, since that is the direct transfer of heat.
When a marshmallow is cooked over a fire, it uses the heat transfer method of conduction. The heat from the fire is directly transferred to the marshmallow through direct contact, causing it to melt and cook.
When you heat up particles in a marshmallow, the particles gain energy and move faster. This causes the marshmallow to expand as the air trapped inside heats up and expands, increasing the volume of the marshmallow.
smoke and burn
The heat transfer involved when a marshmallow is roasted over a bonfire is primarily conduction. The heat from the flames directly heats the marshmallow through direct contact, causing it to melt and become gooey.
A marshmallow gets hard if you warm it on the fire and then you leave it out.......It will also get hard if you leave the bag of marshmallows outside open!!!
heat energy.
No. They will melt. They are chocolate and marshmallow .
Toasting a marshmallow is a chemical change because the heat causes the complex sugars in the marshmallow to caramelize and change their chemical structure. This results in the marshmallow turning brown and gaining a different taste and texture.
Charring a marshmallow is a chemical change because the heat causes the sugars in the marshmallow to break down and react with oxygen in the air, producing new substances. This results in a change in the chemical composition of the marshmallow.
Convection, and radiation with a small amount of conduction cooks the marshmallow. The primary heat transfer is convection from the hot gasses passing over the marshmallow.
This is WHY we call it toast. It is browned bread!! Toast goes brown because of the Maillard reaction. Quote from the Related Link: "The Maillard reaction is a chemical reaction between an amino acid and a reducing sugar, usually requiring heat."