It is probably due to the subjective sensation of hot and cold that you feel.
I'm not basing this on personal MEDICAL QUALIFICATIONS BUT EXPERIENCE IN A COLD CLIMATE.
TRY EXPERIMENTING WITH A BOWL OF WARM WATER (BLOOD HEAT) AND A BOWL OF ICE WATER.
Chill your hand then plunge it into the warm... do the opposite..
test and learn.
Firstmate.
Depends on what the solid is made of and what the temperature is. Sand is a solid and will stay outside forever in normal Earth temperatures without melting. Ice will stay outside forever if the temperature remains below freezing point.
Freezing occurs without any change in temperature. A liquid at freezing temperature becomes a solid at freezing temperature.
The water was actually below freezing, -2o C (28o F). It could hold this temperature without freezing, because the water in the ocean has a lower freezing point than water without salt.
No, not quickly. You can separate oil from water by freezing it all.
The temperature is what you set it to be. The question "what is the freezing point", is different : the more salt the lower the freezing point, to a limit a few degrees below 0 degrees centigrade.
To avoid supercooling. Supercooling may occur if a liquid is cooled too quickly. It's temperature falls below it's normal freezing point without the appearance of solid.
Cake will go stale eventually at any temperature above freezing, or if frozen without proper wrapping.
If the temperature does not go below freezing then you're fine. Usually during a snowstorm, it doesn't go below freezing. However, if the water was still in your radiator and also in your engine without antifreeze and the outside temperature did drop below freezing, then you could potentially have a cracked block and/or a cracked radiator on your hands. Usually it's not too bad if the temperature doesn't go too far below freezing, but frozen water expands with a huge amount of force when it gets around 15-20 below zero.
Go stand outside without a jacket. If you get cold bring your dog inside. Your dog will like you better if you do.
As with any other substance, without any outside influence, it will take on the ambient temperature.
Not with a thermometer, which had not yet been invented. It was, of course, possible to determine whether the temperature was below freezing or not without the assistance of a thermometer.
Something is still wrong with it, and without seeing it no one can yell you what it is.