Children, even those that are vaccinated, may develop rotavirus disease more than once. That is because neither natural infection with rotavirus nor rotavirus vaccination provides full immunity (protection) from future infections. Usually a personâs first infection with rotavirus causes the most severe symptoms.
Because molecules move quicker at higher temperature, causing them to collides more. Since they collides more, reaction occurs to be a lot faster to. And that's why things dissolve quicker in hot water than in room temperature water.
But first, here are some of the interesting claims about water I found. 1  Hot water freezes faster than cold water. 2  Previously boiled water freezes faster than regular water. 3  Previously boiled water boils faster than regular water. 4  Cold water boils faster than hot water. 5  Adding salt to water raises its boiling point. Chemically speaking, this is a verifiable fact. Salt does raise waterâs boiling point (and lower its freezing pointâwhich is why home ice cream makers use rock salt). But the real question is whether this makes it take longer to get to the boiling point (and, for that matter, how far above 212Â°F/100Â°C it will get).