Energy will be created or destroyed by ordinary physical or chemical process
According to the law of conservation of energy, energy cannot be created or destroyed in an isolated system during ordinary physical or chemical processes. It can only be converted from one form to another. This principle is known as the first law of thermodynamics.
According to the law of conservation of energy, energy cannot be created or destroyed in an isolated system. It can only be converted from one form to another. This principle applies to both physical and chemical processes. In physical processes, such as the flow of water from a higher level to a lower level, the potential energy of the water is converted into kinetic energy. In chemical processes, such as the burning of fuel, the chemical energy stored in the fuel is converted into heat energy and other forms of energy. Ultimately, the total amount of energy in a closed system remains constant, even though it may undergo various transformations.
The law of conservation of energy states that energy is neither created nor destroyed in ordinary physical or chemical processes. Instead, it is transformed from one form to another or transferred between systems.
To understand how energy is conserved in physical processes, let's consider an example of a ball thrown into the air. Initially, the ball possesses kinetic energy due to its motion, and as it ascends, this kinetic energy is gradually converted into gravitational potential energy. At the highest point, the ball momentarily comes to a stop before descending. During this descent, the potential energy is converted back into kinetic energy.
In chemical processes, such as burning wood, energy is released as heat and light. This energy is stored in the chemical bonds of the wood, and when the bonds are broken, the energy is released. However, the total energy before and after the combustion process remains the same. The released energy can be converted into other forms, such as heat, light, or mechanical work.
In summary, energy is conserved in ordinary physical and chemical processes. It can be transformed and transferred between different forms, but the total energy within a closed system remains constant.