5 Basic Chemical Laws through informative gifs

Chemistry is sometimes called "the central science" because it bridges other natural sciences like physics, geology and biology with each other. Chemistry is a branch of physical science but distinct from physics.Chemical reactions are governed by certain laws, which have become fundamental concepts in chemistry.

1) Boyle's Law

Boyle's law is an experimental gas law which describes how the pressure of a gas tends to decrease as the volume of a gas increases.

2) Charles's Law

It is a gas law which states that when the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.

3) Fick's Law of Diffusion

The animation shows the molecular diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The barrier is removed, and the solute diffuses to fill the whole container. In the top part, a single molecule moves around randomly. In the middle compartment, you see that with more molecules, there is a clear trend where the solute fills the container more and more uniformly. The bottom part comprises of enormous number of solute molecules, randomness becomes undetectable: The solute appears to move smoothly and systematically from high-concentration areas to low-concentration areas. This smooth flow is described by Fick's laws.

4) Charles-Gay-Lussac's law

The relationship between temperature and volume, at a constant number of moles and pressure, is called Charles and Gay-Lussac's Law. They observed that if the pressure is held constant, the volume V is equal to a constant times the temperature T.

5) Law of Conservation of Energy

The animation is an example of the law of conservation of energy. As the cart rolls down the hill from its elevated position, its mechanical energy is transformed from potential energy to kinetic energy. At a height just above the ground, the majority of the energy is in the form of kinetic energy. This is to say, energy due to vertical position has been transformed into energy due to motion. In fact, if air resistance can be neglected, then the amount of potential energy loss equals the amount of kinetic energy gained. Calculations can be performed to illustrate that the potential energy lost by the 3.0-kg cart in the above animation is equal to the kinetic energy gained.

6468   10/06/2014

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