Octavo Básico

Modelo atómico de Rutherford

Tras el descubrimiento del protón; Rutherford formuló su modelo atómico.

Expresión algebraica

El resultado de combinar mediante las operaciones de adición y sustracción, uno o más términos algebraicos, se denomina expresión algebraica. Para entender de qué estamos hablando debemos partir aprendiendo algunos conceptos básicos del álgebra. Vamos a conocerlos!! Término algebraico Un término algebraico es una multiplicación en que uno de los factores es una constante que […]

Modelo atómico de Böhr

Propuso un nuevo modelo atómico, según el cual los electrones giran alrededor del núcleo en unos niveles bien definidos.

Ecuación algebraica simple

Una ecuación es la igualdad entre dos expresiones algebraicas, que nos permitirá descubrir el valor desconocido o incógnita de un problema.

Frecuencia relativa

Biogeography

The abundance of precipitations and, consequently, the greater humidity present in the ambiance favors the development of diverse hygromorphic species and vegetal associations that need permanent water supplies. Among these associations we can find the evergreen and rain forests. The local vegetal biodiversity groups around pure unities, for instance, in larch tree or lenga forests. […]

What you have to know about the Conservative Republic

We have known the governments that took place during the period denominated as the Conservative Republic.

Intestino delgado

En este tramo del tracto digestivo, la comida es descompuesta por el jugo pancreático, la bilis y las secreciones intestinales, de modo que se pueda absorber y hacer uso eficiente de los compuestos nutritivos.

Multiple choice test

1.- Which is the capital of the region of Maule? a) Curico b) Cauquenes c) Talca d) Linares Correct response: c 2.- Where does the Maule river flow into? a) north of the city of Constitucion b) near the beach town of Iloca c) into Vichuquen lake d) south of Llico Correct response: a 3.- […]

What you must know about Genetics and DNA

Heritage and variation make up the basis of genetics studies

Physical geography, zone of coasts

In the regions northern part are located the transversal valleys (that are also in the Region of Atacama) and in the southern area they tighten leaving only some in the coastal plains and in the Coastal ranges. –Littoral or coastal plains: are narrow in the whole zone, since they do not overpass the 15 km […]

Bueras, Santiago

He was born on May 7th of 1786 in Petorca (Region of Valparaiso). His parents were Francisco Bueras de la Maza, a farmer of the zone, and Josefa Avaria. At the age of twelve, he was enrolled in the Seminario del Santo Angel de la Guarda school, in Santiago. Later, in 1802, he entered to […]