Chemistry SL
6
Chapters
243
Notes
Chapter 1 - Models Of The Particulate Nature Of Matter
Chapter 2 - Models Of Bonding & Structure
Chapter 3 - Classification Of Matter
Chapter 4 - What Drives Chemical Reactions?
Chapter 5 - How Much, How Fast & How Far?
Chapter 6 - What Are The Mechanisms Of Chemical Change?
Chemistry SL
Chapter 2 - Models Of Bonding & Structure
Unlock Advanced Sensitivity: Explore TLC Methods!
389 words
2 mins read
Last edited on 5th Nov 2024
Table of content
What is it?🚀
TLC is like the cool, sophisticated sibling of paper chromatography. It's a bit more costly, but guess what? It's super sensitive! Think of it as the HD version of your regular TV.
The setup📐
- Stationary Phase: This is a shiny rectangle plate made of glass or metal, but the cool part? It's coated with either:
- 🏖 Silica (SiO2) – think of sandy beaches!
- 🥤 Alumina (Al2O3) – similar to the stuff in your soda can!
- These surfaces (silica or alumina) are like social butterflies – they're super polar and have many hydroxyl friends. So, they love to hold onto things!
How's the magic done?🎨
- You put a tiny drop (spot) of your mixture on the plate.
- Dip the plate's base in a chamber with a non-polar organic solvent (think of this as the magic potion).
The race🏁
- Polar substances are the tortoises 🐢. They take their time because they love hanging out with the silica or alumina.
- Non-polar ones? They're the hares 🐇! They zoom up because they'd rather chill with the solvent.
Unlock the Full Content! 
Dive deeper and gain exclusive access to premium files of Chemistry SL. Subscribe now and get closer to that 45 🌟
Chemistry SL
Chapter 2 - Models Of Bonding & Structure
Unlock Advanced Sensitivity: Explore TLC Methods!
389 words
2 mins read
Last edited on 5th Nov 2024
Table of content
What is it?🚀
TLC is like the cool, sophisticated sibling of paper chromatography. It's a bit more costly, but guess what? It's super sensitive! Think of it as the HD version of your regular TV.
The setup📐
- Stationary Phase: This is a shiny rectangle plate made of glass or metal, but the cool part? It's coated with either:
- 🏖 Silica (SiO2) – think of sandy beaches!
- 🥤 Alumina (Al2O3) – similar to the stuff in your soda can!
- These surfaces (silica or alumina) are like social butterflies – they're super polar and have many hydroxyl friends. So, they love to hold onto things!
How's the magic done?🎨
- You put a tiny drop (spot) of your mixture on the plate.
- Dip the plate's base in a chamber with a non-polar organic solvent (think of this as the magic potion).
The race🏁
- Polar substances are the tortoises 🐢. They take their time because they love hanging out with the silica or alumina.
- Non-polar ones? They're the hares 🐇! They zoom up because they'd rather chill with the solvent.
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Chemistry SL. Subscribe now and get closer to that 45 🌟