Mixture

recap~ Mixtures are molecules made up of two or more different type of atom physically joined together.
Note that Mixtures can be a element to element, element to compound or compound to compound. Quite confusing but hope you can digest it.
Next, how is a mixture form? A mixture is formed when a solute dissolves in a solvent. A solute is the substance that dissolve in solvent and solvent is the liquid that solute dissolves in.
There are three types of mixtures(secondary level only needs to know solution and suspension).
Solution- the solute can completely dissolve in the solvent.
Colloids- particles are completely seperated evenly in the solvent but not dissolved.
Suspension-particles are unable to dissolve thus will eventually drop to the bottom.
There are three types of solutions
1. dilute-weak concentration of a solution.
2. concentrated-moderate concentration of a solution.
3. saturated-maximum concentration of a solution.
Suspension are formed because the ideal particles are unable to dissolve in a particular solvent.
For example.. sulfur cannot dissolve in water thus forming a suspension.
However sulfur can be dissolved in methylbenzene(yes extracted from test paper).
what's the explanations for this?
Very simple. The particles are too big to be dissolved in water but it is just right to be dissolved in methylbenzene(CH3). In this case, salt(NaCl) can be dissolve in both water and methylbenzene(not really good).
Okay.. what else...
Oh yeah. how do you know which one is a suspension which one is a solution?
A solution is homogenous(uniform throughout), no residue is found and no seperation when left to stand. A suspension is the opposite of a solution.