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write down changes in the energy of molecule in the case of changes listed below solid->liquid liquid->gas liquid ->solid |
| The kinetic theory of matter helps us to explain why matter exists in different phases (solid, liquid, and gas) and how matter can change from one phase to the next. There are spaces between particles of matter, and these particles are constantly moving. All particles have energy, and the energy varies depending on whether the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed. Changes in Phase A change in phase may occur when the energy of the particles is changed. |
