Question

why does it take longer a boil a kettle of water than to warm the same kettle of water to a lower temperature​

Answer 1

Answer:

So all the energy of the steam is carried away so rapidly, that it does not really heat up the water. ... Thus some of the hot water boils away and there is less water in the kettle when it starts to cool. So it should take less time

Answer 2

Answer:

To boil water we must increase its temperature to 100°C.

Explanation:

It takes longer to boil a large beaker of water than a small beaker. This is because the large beaker contains more water and needs to gain more internal energy to reach 100°C