Molecular Orbital Theory
The Lewis structures, the VSEPR theory and the valence binding method form a powerful combination to describe covalent bonding and molecular structures. The results are satisfactory for most of our purposes. However, sometimes, chemists need […]
Probability
We often use the word “probability“ in ordinary language; so, for example: “It is likely that tomorrow can not come” When we say these kinds of sentences, we want to express that we are […]
Elasticity and Fracture
When an object is at rest, we can think that it is not interesting to study because it does not have speed or acceleration and because the forces which are acting on it are zero. […]
Solubility and Precipitation
The amount of solute, usually expressed in grams, that dissolves in a certain amount of solvent (usually 100 g), to obtain a saturated solution, is called solubility. It is said that a body is […]
Force and Pressure in Fluids
The three common states, or phases, of matter, are solid, liquid, and gaseous. The solid maintains a fixed shape and size; even when a large force is applied, a solid will not change easily in […]
Successions
A succession is an ordered sequence of numbers, such as: A succession of real numbers is an application of the set N (set of natural number excluding zero) in the set R of the real […]
Pure substances and mixtures
Matter is made up of tiny units called atoms. We currently know that there are 119 different types of atoms, which are the basis of the 119 elements of the periodic table (including “unnunennio” which […]
Collisions
When two or more bodies approach each other, internal forces act between them, causing a variation in their linear momentum and in their energy, producing an exchange between them of both magnitudes. In this case, […]
The chemistry of carbon
Since its beginnings in the 18th and 19th centuries, chemistry has been divided into two main branches: organic chemistry and inorganic chemistry. Organic Chemistry: It was associated with the chemistry of living beings and the […]
REAL AND COMPLEX NUMBERS
The union of racional and irracional numbers forms a set called real numbers. If we remember the different types of numerical sets, we see that we have: Rational numbers also contain integers numbers that have […]
