Boiling causes the water level to drop due to the second statement: "Boiling turns liquid water into water vapour". Here's the step-by-step explanation:

1. When you heat water, it reaches a temperature called the boiling point (100 degrees Celsius or 212 degrees Fahrenheit at sea level). At this temperature, the water molecules have enough energy to change state.

2. The process of changing from a liquid to a gas is called vaporization. When water is boiling, it's undergoing vaporization.

3. As the water turns into water vapour (or steam), it leaves the surface of the liquid water and enters the air. This is why you see steam rising from a pot of boiling water.

4. As more and more water molecules turn into gas and leave the liquid, the level of water in the pot decreases. This is why boiling causes the water level to drop.

The first and third statements are incorrect. Boiling does not cause particles in a liquid to move closer together; in fact, it causes them to move further apart as they change from a liquid state to a gas state. And boiling does not cause water vapour to turn into liquid water; that process is called condensation and it happens when water vapour is cooled.

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Boiling causes the water level to drop due to the second statement: "Boiling turns liquid water into water vapour". Here's the step-by-step explanation:

1. When you heat water, it reaches a temperature called the boiling point (100 degrees Celsius or 212 degrees Fahrenheit at sea level). At this temperature, the water molecules have enough energy to change state.

2. The process of changing from a liquid to a gas is called vaporization. When water is boiling, it's undergoing vaporization.

3. As the water turns into water vapour (or steam), it leaves the surface of the liquid water and enters the air. This is why you see steam rising from a pot of boiling water.

4. As more and more water molecules turn into gas and leave the liquid, the level of water in the pot decreases. This is why boiling causes the water level to drop.

The first and third statements are incorrect. Boiling does not cause particles in a liquid to move closer together; in fact, it causes them to move further apart as they change from a liquid state to a gas state. And boiling does not cause water vapour to turn into liquid water; that process is called condensation and it happens when water vapour is cooled.

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Boiling causes the water level to drop due to the second statement: "Boiling turns liquid water into water vapour". Here's the step-by-step explanation:

1. When you heat water, it reaches a temperature called the boiling point (100 degrees Celsius or 212 degrees Fahrenheit at sea level). At this temperature, the water molecules have enough energy to change state.

2. The process of changing from a liquid to a gas is called vaporization. When water is boiling, it's undergoing vaporization.

3. As the water turns into water vapour (or steam), it leaves the surface of the liquid water and enters the air. This is why you see steam rising from a pot of boiling water.

4. As more and more water molecules turn into gas and leave the liquid, the level of water in the pot decreases. This is why boiling causes the water level to drop.

The first and third statements are incorrect. Boiling does not cause particles in a liquid to move closer together; in fact, it causes them to move further apart as they change from a liquid state to a gas state. And boiling does not cause water vapour to turn into liquid water; that process is called condensation and it happens when water vapour is cooled.

Determine the reason why boiling causes the water level to drop.Boiling causes the particles in a liquid to move closer togetherBoiling turns liquid water into water vapourBoiling causes water vapour to turn into liquid water

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