You may be talking about the latent heat of vaporisation as a liquid boils it talkes on energy to change from liquit to gas. This means that whatever is causing it to boil gets colder.
Hence if you spill a volatile liquid on you skin it feels cold as it evaporates very quickly.
Andy
cold water heating up to its boiling point a physical change or a chemical change
They are the same. When cold water heats up and bubbles that means it is boiling.
100 oC is the boiling point of water at 1 atmosphere pressure.
the melting point Melting is the opposite of freezing. Condensation is the opposite of boiling.
Potassium Manganate (VII) also called potassium permanganate, dissolves very quickly in hot water and much slower in cold water.
boiling
The motivation is to avoid uncontrolled boiling and splashing.
freezing, very cold, cold, lukewarm, warm, hot, very hot, boiling
cold water heating up to its boiling point a physical change or a chemical change
They are the same. When cold water heats up and bubbles that means it is boiling.
It freeze in cold and disolve in boilng
Sodium chloride is also soluble in boiling water.
It requires water and oxygen. Cold, lukewarm, or boiling water will do it. Boiling can introduce some other types of errosion/corrosion, also.
Yes
There is nothing called "condensation point". At least not such thing related to do condensation of gases. But there is a fixed point at a certain pressure, called "boiling point", means, the temperature at which a liquid boils. But condensation does not occur at a fixed temperature like boiling. Think this way, you can see water drops on a cold bottle that occur by condensation of water vapor in the air. For this, just a cold bottle is enough, not a bottle at a certain temperature.
It means boiling points are hot and freezing points are cold.
It lowers the freezing point and raises the boiling point of water.