(i'm not saying that in the past classes we saw the same things, but you understand me
), the subject was SOLUTIONS, SUSPENSION, COLLOIDSWe already know what is a solution (we saw it like 4 times
), but what is a suspension (no, i'm not talking about cars XD) and acolloid
?? and what do these concepts have in common???Well, these are mixtures that use water as a solvent
(aqueous mixtures), yes, as simple as that jejeje.Characteristics:
- Solutions: These are homogeneous and have small particles (0.1 - 1 nm) Example: Ions, Atoms, Small molecules
- Colloids: Are heterogeneous, they have "medium" size particles (1 nm - 1000 nm) Example: large molecules
- Suspension: These are heterogeneous too, and have BIG particles (1000 nm and greater) Example: Aggregates
I don't know if someone else has this problems, but i didn't know what was a Nano Meter or a Micro Meter
, but now i know:Milimeter/100 = Micro Meter Micro Meter/100 = Nano Meter (a really really really REALLY small particle)
Also, we saw 3 more concepts:
- Tyndall Effect: The scattering of visible light by colloidal particles and suspensions aggregates is called The Tyndall Effect. In my words it's "the more photons you have bouncing with particles, the less light you can see"
- Brownian Motion: Is the chaotic movement of the particles
- Emulsion: It's a special kind of mixture, it is a colloid, a liquid solvent and a liquid solute. "A colloidal dispersion of a liquid and a liquid".
Homar Hurtado
No hay comentarios:
Publicar un comentario