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Why does changing a liquid to a gas require a large amount of heat energy?
Wiki User
∙ 12y ago
It excites the molecules enough to make them break away from each other and become a gas; it forces molecules further away. Temperature is just a measure of how much energy(movement) a molecule has.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoWhen heat is applied to a liquid a transformation begins. As the temperature of the water increases it is aproaching its boiling point which is 100 degrees Celcius. After that the water starts to evaporate. Looking closer, the molecules when they are liquid are very tightly bound and they dont have much room to move and therefore does not have alot of kinetic energy. But the increase of temperature affects the kinetic energy, raising it too. Finally when the kinetic energy reaches its peak (the boiling point) the molecules break apart and escape into the atmosphere.
You can test this theory by boiling a pot of water to a hundred degrees celcius and place a lid over the top. Water collects on the top because of the evaporation of the water (the molecules that are trying to escape into the atmosphere).
Wiki User
∙ 12y agoBecause the molecules move faster and faster as the liquid becomes hotter. Eventually, the molecules are moving fast enough to escape at the surface of the liquid and rise into the atmosphere above.
Wiki User
∙ 15y agothermal energy is needed because it makes the particles less dense, move faster, and spread farther apart, changing it into a gas.
Wiki User
∙ 15y agoLiquid turns into gas when the liquid is boiled. Then it evaporates into gas.
Wiki User
∙ 12y agoThe molecules in Liquids are more closely compact than Gas. A large amount of heat energy is required to separate the bonds between the molecules.
Wiki User
∙ 12y agoadd
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What is the latent of vaporization?
The latent heat of vaporization is what is commonly referred to as boiling. This is the amount of energy require to change from a state of liquid to vapor.
What energy required to go from liquid to gas?
No. Energy is require to change it from liquid to gas. When water goes from gas to liquid it releases energy.
Can energy cause substances to change phase?
Yes it does. Changing between the forms requires energy to be lost or gained depending on the direction the substance is changing. Changing from solid to liquid or gas and changing from liquid to gas both require inputs of energy to the substance, and changing from gas to liquid or solid or from liquid to solid releases energy from the substance to the environment, all at constant temperature.
The process of changing from liquid to vapor?
causes heat energy to flow from the liquid and cool the surroundings.
Which of the changes of state shown in the figure require an increase in energy answers?
Evaporation uses energy to change from a liquid to a gas. Melting uses energy to change from a solid to a liquid. Condensation releases energy to change from a gas to a liquid. Freezing releases energy to change from a liquid to a solid.
Radiation require a heated liquid to transfer energy?
Radiation does not require a heated liquid to transfer energy.
Which material would require the least amount of energy to change 1kg from a solid to a liquid ethanol aluminum propane or water?
ethanol
What is the latent of vaporization?
The latent heat of vaporization is what is commonly referred to as boiling. This is the amount of energy require to change from a state of liquid to vapor.
What energy required to go from liquid to gas?
No. Energy is require to change it from liquid to gas. When water goes from gas to liquid it releases energy.
Do particles lose or gain energy when changing from a liquid to a gas?
They lose energy.
Can energy cause substances to change phase?
Yes it does. Changing between the forms requires energy to be lost or gained depending on the direction the substance is changing. Changing from solid to liquid or gas and changing from liquid to gas both require inputs of energy to the substance, and changing from gas to liquid or solid or from liquid to solid releases energy from the substance to the environment, all at constant temperature.
When an obeject is changing from a liquid to a solid does the energy increase or decrease?
The energy level decreases.
Does the process changing molecule of water from liquid to a gas take more energy then ice from a solid to a liquid?
Yes. Changing from liquid to gas is called vaporization, and requires more energy (in water) than to change from solid to liquid, which is called fusion.
Which state changes require heat and which gives off heat?
Change from solid to liquid to gas require energy. Change from gas to liquid to solid emit energy.
What does the latent heat of fusion represent?
The energy required to melt a substance. (Apex)
The process of changing from liquid to vapor?
causes heat energy to flow from the liquid and cool the surroundings.
When heat is added to a liquid at the boiling temperature it converts the liquid into a gas at the same temperature because?
The additional heat, called "enthalpy" completes the phase change, by changing the arrangement of the molecules in the existing environment, not the temperature. The energy must be removed from a gas to cause condensation into liquid, and from a liquid to cause solidification (freezing). Conversely, it is added when changing a solid to a liquid or a liquid to a gas. At a certain temperature (critical temperature), the process happens spontaneously because the phase boundary disappears.
