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Phase changes of water - Oakland Schools

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Conduction<br />

If you have ever left a silver spoon in very hot soup, you will notice that the whole<br />

spoon gets hot. Thermal energy is transferred from the hot end <strong>of</strong> the spoon through<br />

the entire length, its called conduction.<br />

• Particles <strong>of</strong>ten collide with each other. When this happens, energy is transferred<br />

from the faster (hotter) moving particle to the slower (cooler) moving particle. This<br />

makes the slower moving particles increase in speed.<br />

• When molecules in a substance are made to move faster, they get warmer. The<br />

warmer an object gets, the more kinetic energy and therefore, thermal energy it<br />

contains:<br />

o Kinetic energy is the energy <strong>of</strong> motion<br />

o Thermal energy is the total energy <strong>of</strong> the atoms.<br />

The Law <strong>of</strong> Conservation <strong>of</strong> Energy states that energy cannot be<br />

created or destroyed. Following this rule we assume no energy is lost<br />

in these collisions.<br />

5

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