Jazmiin

Conocimiento y manejo de material de uso común en el laboratorio.

El objetivo de esta practica es que nosotros los alumnos conozcamos y manejemos adecuadamente el material de uso común en ellaboratorio, mediante la cuantificación de ciertas magnitudes físicas como: peso, masa, temperatura, volumen, entre otras.

Este es un curso donde pondremos manos y mente ala obra para hacer múltiplesexperimentos y descubrir los secretos de la química, también conocida como ciencia central; “central” por que se apoya en la física para explicar muchos fenómenos y sirve de base para para comprenderlos biológicos. Y “central” también por que esta en el centro de nuestras vidas, dela comida con la que nos alimentamos, la ropa que usamos, en los coches y camiones. Y otra vez “central” por que elconocimiento en esta materia tiene la potencialidad de transformar el mundo de manera radial, para bien o para mal.

• Punto de ebullición: Es la temperatura ala cual la presión de vapor del liquidoes igual ala presión del medio que rodea al liquido. Depende de la masa molecular de la sustancia y del tipo de las fuerzas intermoleculares de esta.
• Punto de fusión: Es la temperatura ala cual elestado solido y el liquido de una sustancia coexisten en equilibrio térmico, ala presión de una atmosfera.
• Solubilidad: Es una medida de capacidad de una determinada sustancia para disolver en otra.El termino solubilidad se utiliza tanto designar al fenómeno cualitivo del proceso de disolución como para expresar cuantitivamente la concentración de las soluciones. La solubilidad de una sustanciadepende de la naturaleza del disolvente y del soluto.
• Masa: Es la magnitud que cuantifica la cantidad de materia de un cuerpo. La unidad de masa es el hilo gramo.
• Peso: Depende de la intensidaddel campo gravitatorio, de la posición relativa de los cuerpos y de la masa de los mismos.
• Volumen: Es una magnitud definida como el espacio ocupado por un cuerpo.

Actividad 1. Determinación…

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