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El cadmio, ¿su presencia nos alerta de la contaminación antropogénica?
(Pontificia Universidad Católica del Perú, 2019-11-26)
Cadmium is very scarce in nature and its presence in the environment is due to industrial development. Irresponsible waste management makes it appear in freshwaters and agricultural soils. It is very toxic and bioaccumulative, ...
Celebrando los 150 años de la tabla periódica
(Pontificia Universidad Católica del Perú, 2019-11-30)
Descubriendo ambas caras de un mismo elemento inusual: el mercurio
(Pontificia Universidad Católica del Perú, 2019-11-26)
The only liquid metal on the periodic table (at room temperature) that has changed the way we think on modern chemistry, introducing the concepts of pressure, vacuum and properties of gases, is mercury. Nevertheless, ...
El wolframio: elemento imprescindible en nuestra vida diaria
(Pontificia Universidad Católica del Perú, 2019-11-26)
Tungsten has become an indispensable element for our daily life. Due to its physical and chemical properties, this metal, as well as its alloys, is considered nowadays as a strategic and necessary element, with which we ...
Zinc, un elemento químico muy versátil
(Pontificia Universidad Católica del Perú, 2019-11-25)
Zinc is a shiny metal whose surface quickly darkens upon contact with air. The main industrial application of this metal is the galvanization of iron and steel parts. Peru is the second largest producer of zinc worldwide, ...
Dos opciones entretenidas para acercarnos a la tabla periódica de los elementos químicos
(Pontificia Universidad Católica del Perú, 2019-11-27)
En esta recomendación se hace una pequeña revisión de los aspectos más destacados de dos libros sobre la tabla periódica: "Los elementos”, de Theodore Grey, y "Los elementos. La nueva guía de los componentes básicos del ...
El cobre: un metal indispensable en la vida cotidiana y en los organismos
(Pontificia Universidad Católica del Perú, 2019-11-25)
Copper is a metal whose versatility has enabled its application in medicine, agriculture, and materials science. In nature, copper is available in the metallic form with an orange-red color and in copper compounds found ...
La OPQ celebra los 150 años de la Tabla Periódica en París y Oporto
(Pontificia Universidad Católica del Perú, 2019-11-27)
In 2019, the sesquicentennial of the publication of the periodic table proposed by Dmitri Mendeleev is commemorated. As part of this celebration, the students selected by the 2018 Peruvian Chemistry Olympiad (OPQ) participated ...
El oro: una materia prima esencial para el mundo
(Pontificia Universidad Católica del Perú, 2019-11-26)
Gold is an inert metal of symbol Au and atomic number 79. Peru is the world's sixth-largest gold producer, and La Libertad is its first producer department of this metal. It is of great importance for jewelers, physicians, ...
El molibdeno, un elemento tan versátil como vital
(Pontificia Universidad Católica del Perú, 2019-11-25)
Molybdenum, produced in Peru as a byproduct of the copper mining industry, was discovered in the XVIIIth century. It is usually added to steel alloys, is amply used in different pigments and its presence in enzymes makes ...