Changes in matter are due to either the absorption of energy or the release of energy. A change from solid, for example ice, requires heat (aka energy) to become a liquid, and more to become a gas. The "cooling off" of the molecules, or the release of energy, however, causes changing from a gas to a liquid.
The process in which energy is given off is called an exothermic change. The energy released can be in the form of heat, light, electricity, or sound
an Exothermic reaction
Exothermic reaction.
Exothermic reaction.
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an exothermic change
When a substance loses energy, it becomes more compact. A gas would turn to liquid and a liquid would turn to solid.
What type of energy is given off with the heat energy?
This process is called exothermic reaction, where energy is released in the form of heat. It typically involves a change from a higher energy state to a lower energy state, resulting in the release of energy to the surroundings. An example would be the solidification of molten lava into solid rock, releasing heat energy in the process.
Exothermic
Light.
The amount of energy given off or absorbed when electrons change energy states is equal to the difference in energy levels between the initial and final states of the electron. This energy is typically released or absorbed in the form of electromagnetic radiation, such as light.