25 March 2014
Everyone was present

Aim: Come out with the video draft plan in terms of sequence and presentation

Video 1: Introduction on Chemical Concepts
1. Opening: Video of dissolving solutes in water (such as milo powder), oil in water
2. Definition: someone holding a paper with the definition of solvent and dissolution
3. Another paper with the question ‘So.. Is there a universal solvent’
4. One person defines polar solvent through the use of slides/images/talking – Jiehui
5. Another person defines the non-polar solvents through slides/images/talking – Pratyum
6. Solvation general rule – Jacob
7. Universal solvent
8. Types of interactions in dissolution for polar and non polar through use of images – Shantanu
9. Briefly discuss the different factors that can affect dissolution

Video 2:
1. Show images of different drugs – Jeremy
2. Explain how dissolution is applicable in area of drug discovery
– adsorption and distribution
3. Show images of oil spill – Haikal
4. Explain how oil spill is cleared using solubility concept
5. Explain what is heavy metal pollution and how the metal ions dissolve in water causing toxicity.

Meeting 3

Discussion over the phone (24 Feb)

We decided to split the work into two parts

1. Polar – Jiehui, Haikal and Jeremy
2. Non Polar – Jacob, Pratyum & Shantanu

After reading on the topic that we are assigned, we will come back and discuss together as a team. Eg. Through posting in the blog or email. After discussion, then we will key into the blog under chemical concept tab.

Polar interactions

To answer this, we must first define what a solvent is and how do reactants dissolve in a solvent. A solvent is liquid that acts a medium for reactions to occur. There are 2 types of solvents. They are polar and non-polar solvents.

Polar solvents are when the molecules have dipole moments. The bonds between the atoms have different electronegativity, resulting in a net dipole moment. To determine whether the molecules have dipole moment, it is important to look at the shape of the molecule and the bond angles.

A polar solvent will generally dissolve a polar molecule due to the charges to break up the molecule into ions and the positive charge of the polar molecule will attract the negative ion and vice versa as seen below when NaCl dissolves in H2O. H20 is an example of a polar molecule due to it having a slightly bent shape, the dipole moments do not cancel out resulting in a partially positive H and a partially negative O.

(source: http://chem.wisc.edu/deptfiles/genchem/sstutorial/Text7/Tx75/tx75.html)