The average kinetic energy of the particles falls.
The molecular energy will usually increase or decrease, depending on the exact situation.
At a unique temperature, called the "freezing point", for each pure substance at a constant pressure, a solid form of the substance can change from solid to liquid phase by absorbing heat energy from its environment without raising the temperature of the substance, and, at the same temperature and pressure, a liquid phase of the same substance, can solidify without changing its temperature if it can transfer heat energy to the external environment.
When a substance changes from a liquid to a gas energy is absorbed. When a substance changes from a gas to a liquid energy is released.
some capture and use the sun's energy as plants do.others do not use sun's energy. while others use the energy from chemical substance in their environment to make food.
Energy transformation is straight-forward in meaning that energy transfers from one thing to another. This happens most often in the environment.
exothermic
Changes the temperature of the substance
It increases
When a substance cools, it loses thermal energy to its surroundings. This process results in a decrease in the substance's temperature as the thermal energy is transferred to the surrounding environment, usually through conduction, convection, or radiation.
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Generally chemical energy can be defined as the aptitude of a substance to be transformed in another substance by a chemical reaction.
When a substance changes state, Energy within the substance is gained or lost, but the composition is unchanged.
they spread apart and move faster when energy is added.
it melts
Diffusion
As the temperature of a substance increases, its thermal energy also increases. This leads to greater kinetic energy of the particles within the substance, causing them to move faster and creating more thermal energy.