What makes the water in the kettle pan boils and then evaporate?

When water is heated, the molecules in the water vibrate and some of them escape into the air, thus becoming water vapor, or the gaseous state of water. That’s why we call it eVAPORation.

Why a pot full of water becomes hot and boils when you put it on top of stove energy?

When water is boiled, the heat energy is transferred to the molecules of water, which begin to move more quickly. Eventually, the molecules have too much energy to stay connected as a liquid. When this occurs, they form gaseous molecules of water vapor, which float to the surface as bubbles and travel into the air.

Why the water begins to boil though there is no heat being added to the system?

This is because once water reaches the boiling point, extra energy is used to change the state of matter and increase the potential energy instead of the kinetic energy. At the boiling point, temperature no longer rises with heat added because the energy is once again being used to break intermolecular bonds.

Why does water expand when heated?

2.1 A was heated. An increase in temperature caused the water molecules to gain energy and move more rapidly, which resulted in water molecules that are farther apart and an increase in water volume. When water is heated, it expands, or increases in volume.

What happens when water in the kettle is heated?

The water inside the kettle boils, evaporates in the form of bubbles and comes out of the spout as steam. Then when the steam makes contact with the cold air outside the kettle, it quickly condenses back to tiny droplets of water which you see as water vapor.

When the pot is heated on the stove Why don t the water molecules on the top of the water heat up immediately?

It takes more heat to vaporize water than to heat it from 0 °C to 100 °C. At 100 °C if you add more heat then it just vaporizes (boils) faster. When you remove the heat source then water stops boiling immediately.

Why does cold water boil faster than warm water?

The rate of heating of a liquid depends on the magnitude of the temperature difference between the liquid and its surroundings (the flame on the stove, for instance). Because it takes cold water some time to reach the temperature of hot water, cold water clearly takes longer to boil than hot water does.

Can water be boiled without boiling explain?

Water will boil at 100∘C under normal atmospheric pressure. But in a pressure cooker, the water can’t boil even if it is reached 105∘C. If the pressure is reduced, then water starts to boil. Boiling means separation of molecules of the liquid and becoming gas.

Why did the water boil in the flask without heating the flask?

Water boils under normal atmospheric pressure at 212°F (100°C). For another example, put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating.