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Fitxa 1. Càlcul de densitats
Objectiu
- Saber calcular les densitats de diferents materials.
- Saber realitzar canvis d’unitats.
Informació
Recorda!!!!
1dm3 = 1l
Activitat 1. Converteix les unitats següents:
500𝑐𝑚3
·
1 𝑑𝑚3
_______𝑐𝑚3
·
1𝑙
1𝑑𝑚3
= _______𝑙
5400
𝐾𝑔
𝑚3
·
1𝑚3
________𝑐𝑚3
·
__________𝑔
1 𝐾𝑔
=
1,320
𝑔
𝑐𝑚3 𝑎
𝐾𝑔
𝑚3
Activitat 2. Calcula la densitat d’un objecte de 2,3 Kg de massa que ocupa un volum d’1,2 m3
.
Activitat 3. La densitat del mercuri és de 13600Kg/m3
. Calcula el volum que ocuparan 200 g
d’aquest metall.
Activitat 4. La densitat de l’aigua és de 1000 Kg/m3. Calcula la massa que té un volum de
3500 l que es troben dins un dipòsit.
Activitat 5. Science Bits. Unitat 2 “Massa, volum i densitat”. Lliçó 6 “La densitat”. Pàgina 1 ex.
1.
Activitat 6. Aquest matí han arribat al laboratori cinc mostres diferents. El primer que han fet
els tècnics del laboratori amb aquestes mostres ha estat mesurar-ne la massa i el volum per
poder calcular-ne la densitat. Els resultats són els següents.
Calcula la densitat de cada mostra en Kg/m3
Massa (g) Volum (cm3
)
Mostra A 3.666 470
Mostra B 450 200
Mostra C 214,2 170
Mostra D 2.599 230
Mostra E 681 150
𝑽 =
𝒎
𝒅 𝒎 = 𝒅 · 𝑽
Activitat 5. Busca informació sobre les substàncies amb més densitat del món i les
substàncies amb densitat més baixa. I digues la seva utilitat.

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5. La densitat (I).docx

  • 1. Fitxa 1. Càlcul de densitats Objectiu - Saber calcular les densitats de diferents materials. - Saber realitzar canvis d’unitats. Informació Recorda!!!! 1dm3 = 1l Activitat 1. Converteix les unitats següents: 500𝑐𝑚3 · 1 𝑑𝑚3 _______𝑐𝑚3 · 1𝑙 1𝑑𝑚3 = _______𝑙 5400 𝐾𝑔 𝑚3 · 1𝑚3 ________𝑐𝑚3 · __________𝑔 1 𝐾𝑔 = 1,320 𝑔 𝑐𝑚3 𝑎 𝐾𝑔 𝑚3 Activitat 2. Calcula la densitat d’un objecte de 2,3 Kg de massa que ocupa un volum d’1,2 m3 . Activitat 3. La densitat del mercuri és de 13600Kg/m3 . Calcula el volum que ocuparan 200 g d’aquest metall. Activitat 4. La densitat de l’aigua és de 1000 Kg/m3. Calcula la massa que té un volum de 3500 l que es troben dins un dipòsit. Activitat 5. Science Bits. Unitat 2 “Massa, volum i densitat”. Lliçó 6 “La densitat”. Pàgina 1 ex. 1. Activitat 6. Aquest matí han arribat al laboratori cinc mostres diferents. El primer que han fet els tècnics del laboratori amb aquestes mostres ha estat mesurar-ne la massa i el volum per poder calcular-ne la densitat. Els resultats són els següents. Calcula la densitat de cada mostra en Kg/m3 Massa (g) Volum (cm3 ) Mostra A 3.666 470 Mostra B 450 200 Mostra C 214,2 170 Mostra D 2.599 230 Mostra E 681 150 𝑽 = 𝒎 𝒅 𝒎 = 𝒅 · 𝑽
  • 2. Activitat 5. Busca informació sobre les substàncies amb més densitat del món i les substàncies amb densitat més baixa. I digues la seva utilitat.