What does radiation do to marshmallows held up to a campfire?

What does radiation do to marshmallows held up to a campfire?

Radiation is where the marshmallow gets the right shade of golden brown. Radiation cooks both the inside and outside of the marshmallow. You will still have it by the fire but not in it and you still need to have it close enough to get the heat to turn it golden brown.

Is heating a marshmallow radiation?

When hovered over the hotplate, the marshmallow became warm, but did not melt. This is an observation of radiation. The electromagnetic waves move through the air from the high energy hotplate to the lower energy marshmallow, causing it to heat up.

What kind of heat does roasting a marshmallow use?

Convection

How does conduction heat a marshmallow?

Conduction is where the heat is tansfered directly into the object from the heat source. If you stick your Marshmallow in the middle of the fire, it will burn to a Crisp, charcoal black. Most people Dislike this way of toasting a marshmallow but it happens to be my favorite.

Can I use a fork to roast marshmallows?

Hold the marshmallows at the edge of the flame to avoid dripping onto the pilot light or other mechanisms. You can use a fork to toast them, but it may blacken if it gets too hot. And remember the fork will be scalding hot before you stick it in your mouth.

Which material conducted heat better when he put the butter on the knife?

The butter on the metal spoon almost immediately melted away; the butter on the wooden spoon melted some; meanwhile, the butter on the plastic spoon stayed firm much longer. The heat was transferred by moving molecules within the spoons. Metal conducts heat much better than plastic or wood.

Is roasting a marshmallow a chemical or physical change?

When marshmallows are roasted, a chemical change happens. When you toast marshmallows, the heat causes a chemical reaction producing water molecules, which then evaporate, leaving carbon behind (the blackened part of the roasted marshmallow).

Is breaking an egg a physical or chemical change?

cracking an egg are examples of irreversible physical changes.

Is frying an egg a chemical or physical change?

chemical change

What is the best way to melt butter?

Place butter in microwave-safe bowl. Place bowl in microwave and cover bowl with small plate. Heat butter at 50 percent power until melted, 30 to 60 seconds (longer if melting a lot of butter). Watch butter and stop microwave as soon as butter has melted.

Why the process of melting of butter is called a reversible physical change?

Melting of butter is a reversible change. This is because the butter can be solidified again by storing in a cool place like refrigerator for some time.

What type of reaction is melting butter?

physical change

Is salt dissolving in water a physical change?

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.