martes, 30 de noviembre de 2010

Examenes resueltos

En esta entrada puedes consultar exámenes realizados este curso. Esta es la mejor manera de corregir errores y tomar nota de modelos de respuesta a cuestiones y problemas

Examen de Noviembre de 2010
Recuperación de la 2º evaluación

viernes, 5 de noviembre de 2010

Exercises about density

1.- If the mass of gold is 123.4g and its volume is 12.1cm3, its density would be_____ g/cm3.
2.- If the mass of silver is 45.3g and its volume is 3.4g/cm3, its density would be_____ g/cm3.
3.- A sample of titanium has a mass of 54.6g and a volume of 12.4cm3; its density would be_____ g/cm3.
4.- A piece of iron has a volume of 52.2cm3 and a mass of 79.5g; therefore its density would be ______g/cm3.
5.-A sample of magnesium has a mass of 44.3g and a volume of 34.2cm3; its density would be____ g/cm3.
6.- A piece of nickel has a volume of 7.6cm3 and a mass of 23.4g; its density would be_____ g/cm3.
7.- A sample of copper has a mass of 55.4g and a volume of 43.2cm3; therefore its density would be______ g/cm3.
8.- If the mass of zince is 65.4 and its volume is 34.2cm3 then its density would be_____ g/cm3.
9.- If chromium has a mass of 78.9g and a volume 15.6cm3 then its density would be_____ g/cm310.
10.- If aluminum has a a volume of 13.5cm3 and a mass of 20.5g then its density would be____ g/cm3
11. - If the mass of barium is 65.4g and its volume is 32.1cm3 its density would be______ g/cm3
12. A sample of mercury has a mass of 97.4g and a volume of 25.3cm3; therefore its density would be______ g/cm3
13. - A piece of lead has a mass of 123.5g and a volume of 45.3cm3; its density would be______ g/cm3
14. - If Bromine has a mass of 2.3g and its volume was 1.8cm3 its density would be_____ g/cm3
15.- A sample of magnesium has a mass of 12.4g and a volume of 6.4cm3 therefore its density would be_____ g/cm3
16.- Write the metals which have appeared in the previous questions in ascending order according its density

jueves, 4 de noviembre de 2010

Practicando con la densidad

En los siguientes enlaces se te plantean una serie de ejercicios y problemas relacionados con la densidad. Puedes comprobar tus resultados y puedes ver como se resuelven los problemas si no has entendido algun paso, ya que todas las preguntas están resueltas y muy bien explicadas

ejercicios 1
ejercicios 2
ejercicios 5


miércoles, 3 de noviembre de 2010