in general the substances are known as refrigerants. Several different materials can be used as refrigerants, the most commonly known is freon, which is pretty much impossible to get anymore since it depletes the ozone layer.
Believe it or not, it keeps food cold! Hints in the name.
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It is the name of the appliance that keeps foods and other things cold. Most of these machines have a compartment that keeps foods frozen called a freezer compartment.
An esky is a cool box. The name comes from an Australian brand name. The reason it keeps food cold is that it is well insulated, so that heat from the surroundings takes a long time to get in.
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It prevents the liquid within the engine from freezing or boiling. Coolant does just what the name implies. It keeps the engine cool, meaning it keeps the engine at the correct operating temperature. It also prevents corrosion within the engine and cooling system.
Then she keeps her maiden name. It is tradition and not compulsory to change it in most jurisdictions.
An insects blood is the same as a humans blood. It keeps them alive and makes all organs function properly.
Cold temperatures cause water to freeze, changing it from liquid to solid. Warm temperatures cause ice to melt, changing it from solid to liquid. Fire can heat water to its boiling point, changing it from liquid to gas. Cold air colliding with warm air in the atmosphere can cause lightning, changing it from gas to plasma.
Liquid is as scientific as you can get.
The winners keeps the trophy and the show keeps the name of the people who won on the hall of fame.
this boy keeps gulping when your mate says your name because he's nervous.