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heat
Atoms
Gas, liquid, soil
Usually, the kinetic energy of the individual particles increases. It's also possible for the particles to gain potential energy - this happens when a substances changes its state of matter. For example, when you add heat to ice (at zero degrees), it will melt, converting into water (also at zero degrees).
The average kinetic energy of the particles falls.
"absorb" When ice melts the particles of water -absorb- energy.
heat
Particles absorb energy when boiling (vapourising), melting and subliming. Particles release energy when freezing and condensing.
The particles of the substance gain kinetic energy as they absorb heat energy. Eventually there is enough kinetic energy for the particles to escape the liquid phase, forming the gas phase.
The particles of the substance gain kinetic energy as they absorb heat energy. Eventually there is enough kinetic energy for the particles to escape the liquid phase, forming the gas phase.
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Thermal energy
Atoms
Optically active
Gas, liquid, soil
Gas, liquid, soil
condensation and melting