after hearing the statement "that ice didn't melt when placed in microwave" from one of my friend, and its indeed true i checked by myself.And now I'm looking for the reason :)sphyics said:i was dumbstruck
sphyics said:i was dumbstruck
Water has a rather high heat of fusion. It takes quite a bit of energy (333.55 kilojoules/kilogram) to convert ice at 0°C to liquid water at 0°C. The same amount of energy applied to liquid water initially at 0°C will raise the temperature of that water to about 80°C.sphyics said:i was dumbstruck
Bob_for_short said:
xxChrisxx said:
Bob_for_short said:
Yes, but the recent discussion on superheating of water misses the point to some extent. The reason water does not melt or boil (easily) is because of the latent heats of fusion and vaporization of water. It takes about the same time to raise liquid water from 0°C to 100°C as it does to change ice at -40°C to liquid water at 0°C, and it takes even longer (a lot longer) to completely boil liquid water that is already at 100°C.Bob_for_short said:
Ice does not melt when placed in a microwave oven because microwaves work by exciting the water molecules in food to create heat. Since ice is mostly made up of water molecules, it does not absorb the microwaves and therefore does not get heated up enough to melt.
Yes, ice can be melted in a microwave oven by first breaking it into smaller pieces and then microwaving it in short intervals. However, it is not recommended to use a microwave for melting large quantities of ice as it can damage the appliance.
It is generally safe to put ice in a microwave oven as it will not cause any harm to the appliance. However, it is important to note that microwaving ice can cause it to heat up unevenly and may result in hot spots that can lead to burns. It is best to use a container with a lid to prevent any splattering and to monitor the ice closely while microwaving.
As mentioned earlier, ice does not melt in a microwave because it does not absorb the microwaves. Instead, the microwaves heat up the air around the ice, causing it to warm up. This can create a layer of warm air around the ice, preventing it from melting.
Yes, there are a few ways to melt ice quickly in a microwave oven. One method is to place the ice in a microwave-safe container and heat it for short intervals, stirring in between. Another method is to add a small amount of water to the ice to help conduct the heat and accelerate the melting process. However, it is important to be cautious and monitor the ice closely to avoid any accidents.