ANEXO 6 Aprovechamiento de la energía
Importancia de la energía
La población va en aumento y por tanto requiere mayor energía para satisfacer sus necesidades. Al generarse más energia.
también aumentan los daños ambientales. ¿Qué podemos hacer para resolver este problema?
Investiga, ordena y argumenta.
Plantea alguna pregunta a tu familia con el propósito de investigar que uso le dan a los combustibles y a la electricidad. Averigua
qué medidas prácticas pueden favorecer el consumo responsable de la energia eléctrica. Aplica al cuestionario por escrito o has
una entrevista
Puedes elaborar tus propias preguntas o utilizar las siguientes:
¿Consideras que el uso que le das a los aparatos ou el adecuado para no desperdiciar energia? ¿Con que fuentas da energia
funcionan? ¿Como le favorece un consumo resposponble de energia?
Concentra las respuestas en una tabla como la siguiente.
Aparato
Función.
Fuente de energía con la que
funciona
Medidas que favorecen elconsumo
responsable de energía.
Escribe las preguntas y respuestas en tu cuaderno.

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Which position represents spring in the southern hemisphere? a) b) c) d)

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely. analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?