The heat required to convert 20 g of liquid water at 100°C to steam at 100°C is the heat of vaporization of water. This is 2260 J/g. Therefore, the total heat required is 20 g * 2260 J/g = 45200 J. This amount of heat is absorbed by the water as it changes phase from liquid to steam.
Yes, a liquid becomes a gas when its particles have absorbed enough energy to overcome the intermolecular forces holding them together. This allows the particles to escape the surface and become a gas.
During a change of state, such as melting or boiling, heat is either absorbed or released. When a substance changes from a solid to a liquid or from a liquid to a gas, heat is absorbed to break the intermolecular forces holding the molecules together. Conversely, when a substance changes from a gas to a liquid or from a liquid to a solid, heat is released as the intermolecular forces are strengthened.
When a substance changes from a liquid to a gas energy is absorbed. When a substance changes from a gas to a liquid energy is released.
Condensation
Melting and boiling (vaporization) absorb energy, freezing and condensing release energy.
When there is a change of state, energy is transferred in the form of either heat or work. For example, when a substance changes from a solid to a liquid, energy is absorbed to break the intermolecular forces holding the solid together. Conversely, when a substance changes from a gas to a liquid, energy is released as the substance condenses.
A gas
In evaporation, the heat is transferred to the substance being evaporated from some heat source or the surroundings. It is released by the substance.
Yes, a liquid becomes a gas when its particles have absorbed enough energy to overcome the intermolecular forces holding them together. This allows the particles to escape the surface and become a gas.
Condensation is released when a gas turns into a liquid. This process involves the release of heat energy.
During a change of state, such as melting or boiling, heat is either absorbed or released. When a substance changes from a solid to a liquid or from a liquid to a gas, heat is absorbed to break the intermolecular forces holding the molecules together. Conversely, when a substance changes from a gas to a liquid or from a liquid to a solid, heat is released as the intermolecular forces are strengthened.
When a substance changes from a liquid to a gas energy is absorbed. When a substance changes from a gas to a liquid energy is released.
Forces can be transferred in a liquid because liquids are considered to be continuous and deformable materials. When a force is applied to one part of a liquid, it causes the liquid molecules to transmit the force throughout the entire liquid volume through pressure. This allows the force to be transferred from one point to another within the liquid.
It is actually neither. The liquid state going to a solid, like water to ice is a combination of the realsed and absorbed energy. The water absorbeds oxygen to become a solid whilst at the same time it relased carbon dyoxyed to become ice.
Energy is absorbed because the iodine is going from a liquid to a gas. This means that the iodine molecules are moving faster so they had to have absorbed more energy to do this.
Condensation
Boiling does require the liquid to be absorbing heat--large amounts at the point of transition from liquid to gas. Obviously, in the real world, some of this heat is being released simultaneously, but more must be absorbed than is released for boiling to continue.