For food safety your refrigerator should run at 2 - 5 degrees C, so the water kept in it will be at that temperature.
The density of materials depends on the temperature.
Room temperature
Room temperature apples will ripen faster than apples that are refrigerated.
Carbonation does not alter temperature. In fact, carbonated soft drinks are normally refrigerated. They taste much better when they are cold.
No. But they do turn brown when refrigerated. So, it is best to eat them when ripened at room temperature.
If the water is above 4C in temperature ( above 40F) it will decrease in volume if refrigerated. When it reaches 40F then it will start to increase in volume, and when it freezes at 32F (0C) it increases a lot in volume when it becomes ice. After that, below 32C, it starts to decrease again.
Between 5 to 10 ºC
nope tonic water does not half to be refrigerated after opening because it is like 7-up.
Sterile water does not have to be refrigerated. However, to remain sterile, it must be kept in a clean, sealed container.
It will get colder.
Whatever temperature it's refrigerated or heated to.
No, it needs to be stored at room temperature.