Activity 2: Recrystallization - main steps



Activity summary

What you must remember :

  • vocabulary associated with recrystallisation
  • the main steps of recrystallisation


Skills linked to the curriculum :

Compétences Capacités à maîtriser

APP

Connaître le vocabulaire lié à la recristallisation

ANA

COM

Présenter une cristallisation



Download activity

word  pdf




Part 1: Dissolution of sample, decoloration and hot filtration

Document 1: Recrystallization video : from 4 min 40 s to 9 min 55 s


Source: MIT Open Course Ware : Recrystallization



Studying a video

Using a video
1.   Rephrase the main steps and explain.

Acquiring vocabulary
2.   Filling in the blanks.

English French
Grains de pierre ponce
To clamp
To tip over
Une impureté
Activated charcoal
To absorb
To swirl
Entonnoir
Filter paper
Un montage de filtration sous vide
The mother liquor



Labelling the document: the vacuum filtration setup
3.   Using the vocabulary help, label the following document.

Vacuum filtration


Part 2: Cooling, crystallization

Document 2: Recrystallization video : from 10 min to 12 min 50 s


Source: MIT Open Course Ware : Recrystallization



Studying a video

Using a video
4. What is the objective in this lab experiment?

Acquiring vocabulary
5. Filling in the blanks

English French
Crystal growth
Une astuce pour déclencher le procédé
Amorcer
Tremper un barreau en verre
To drive to completion
To scrape Gratter
Weighing dish
RT : room temperature
An oven
A dessicator


Using a document
6. What happens in the above document? Present the results using the given vocabulary.

Document 3

Doc

 Source: www.wikimediacommons.org
Last modified: Tuesday, 19 June 2018, 10:46 AM