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Answered 2012-10-03 13:27:40

The particles themselves don't change, but their behavior does. If you are simply heating a solid, but not to the point of a phase change, the particles remain locked in place but they vibrate faster. If you heat a solid to the point that it goes through a phase change, the particles start to vibrate fast enough to break the intermolecular bonds and keep them broken enough to allow the particles to slide past and around one another.

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The substance will start melting and then boiling because the particles will start crashing to each other so they will start moving.


The energy has to go somewhere. If heat energy is added, it will either increase the temperature, or change the state of matter of the substance.


As energy is added to a substance, the particles that make up the substance vibrate faster. This is what causes substances to change state (solid to liquid to gas). As the particles move faster, the structure changes.


energy makes particles move.The more energy the particles have,the faster they can move and they farther apart they can get.


Heat energy must be added to or subtracted from a substance to cause a phase change.


When energy is added the particles inside the substance vibrate more. Conversely, the vibrate less when energy is removed.


Particle motion increases as energy (like heat) is added. The motion slows as energy leaves. Temperature is a measure of this change in particle motion.




The substance's particals will start slowing down and come closer together. As kinetic energy is removed from a substance, it will do the opposite as when kinetic energy is added to a substance.


If you are freezing, Energy is taken away from the substance If you are heating, Energy is added to the substance


For example, when heat energy (thermal energy) is added to a substance, either its temperature will increase, or it will change its state (as when ice is melted).


Heat is energy the substance needs to change it's state of matter (the more energy a substance has the higher it's temperature)


when you add energy the substance it gets warmer!! The energy that is added too a substance during a change of state is used too break the attractions between particles!! so, the temperature does not change until the change in state is complete! energy change from solid to liquid: melting increases change from liquid to gas: evaporation increases change from gas to liquid: condensation decreases change from liquid to solid: freezing decreases change from solid to gas: sublimation increases



I'm assuming you are talking about sub-atomic particles. The act of melting cannot be applied to particles because melting refers to a change of state of a substance. Substances, whether they be compounds or elemental, are a collection of atoms. These atoms, can be of 3 different states, depending on their temperature. If below the particular substance's melting point, it is solid. Between the melting and boiling point, the substance is liquid, and above the boiling point, the substance is gaseous. The state of the substance refers to the total amount of energy within the substance. Heat is energy, and melting a substance is only adding energy to it. the substance, on a molecular level, does not change when melting occurs. Therefore, melting a particle cannot occur, only energy can be added, which increases movement of the particles.



When thermal energy is added to particles of matter, it causes the particles to move faster and emit more energy.


When heat is added to a particle, it will get more exited and move faster. The more heat you add, the faster the particles will move, and the further form one another they will be. Therefore, adding energy to the particles will also increase the spaces between them.


Basically what it comes down to is the substance that is left behind during the phase change (say the liquid when it is changing to a vapor) has a lower internal energy than it had before the phase change started. To maintain the substance at its original temperature, an equivalent amount of energy must be added to make up for the loss of internal energy due to the phase change. (Conservation of Energy)The energy added in this case is heat, which in turn causes more molecules of the substance to change phases and lowers the internal energy & the process repeats. This is why the temperature remains constant as you add heat to a substance during a phase change. Once the phase change is completed the added heat will eventually cause the temperature to rise in the new phase of the substance. Hope this explanation helps. It's kind of hard to explain without a basic knowledge of thermodynamics.


All in the sequence : solid -> liquid -> gas -> plasma.


When energy is added to anything, the particles of the substance vibrate faster. In the case of air, the particles increased motion causes them to hit the walls of the container and each other more often and with greater force. This causes increased pressure.


Due to the breaking or formation of the bonds that hold the particles together.


they spread apart and move faster when energy is added.