### Van der Waals Forces

Van der Waals Forces theory Van der Waals forces, although they don’t form a chemical bond theirselves, they are responsible for the attraction between neutral and saturated molecules, which result in the condensed states […]

### Logarithms Theory

Logarithms Definition of Logarithms: Be a positive real number non-zero and different to 1, and A another positive and non-zero number. It is called the logarithm of the number A in the base a, […]

### Fractions theory

Fractions Definition of Fractions A fraction is the quotient of two integers a and b, which is represented as follows: b -> denominator, indicates the number of parties that has been split the unit. […]

### Periodic System Theory

Periodic System The current Periodic System is based on the one which was proposed by Mendeleiev with the inherent corrections to Moseley’s law, as it is said, used as sort order atomic number. It […]

### Rotation theory

Rotation A Rotation is a circular movement of an object around a center (or point) of rotation. A three-dimensional object rotates always around an imaginary line called a rotation axis. A rotation of a […]

### Matrices operations theory

Matrices additions and subtractions theory The sum of two Matrices (Aij), (Bij) of the same dimension, is another matrix (Rij) of the same dimension and with generic term sij=aij+bij. Therefore, to be able […]

### Hydrogen Bond Theory

Hydrogen Bond Many hydrogenated compounds have properties some abnormal that can be interpreted by assuming that amongst its molecules is formed a special type of link, characteristic of hydrogen atoms, called as Hydrogen Bond, […]

### Oscillations theory

Oscillations Oscillations are the repetitive variation, disturbance or fluctuation over the time measure about a central value or system. A particle oscillates periodically when it moves relative to its equilibrium position. Simple harmonic motion […]

### Calculate the Inverse of a Matrix II

Inverse of a Matrix theory Inverse of a Matrix Definition method. If the product between two matrices is the identity matrix, then we say that the matrices are “inverse”; because by multiplying them we […]

### Statics theory

Statics Statics is the branch of mechanics that studies the bodies in condition of balance submitted to the action of forces. Strength is the action that one has on something, either by pulling or […]