Solute: The substance that dissolves (e.g., sugar, salt).
Solvent: The substance that does the dissolving (e.g., water, alcohol).
Solution: The homogeneous mixture formed when the solute dissolves in the solvent.
Key points about dissolving:
* No new chemical bonds are formed: The solute and solvent molecules remain intact, just intermixed.
* The solute particles are surrounded by solvent molecules: This is called solvation, and it's driven by attractive forces between solute and solvent molecules.
* The dissolved solute can often be recovered: For example, you can evaporate the water from a sugar solution to get the sugar back.
Examples:
* Sugar in water: Sugar crystals dissolve in water, becoming surrounded by water molecules and forming a sugar solution.
* Salt in water: Salt crystals dissolve in water, separating into sodium and chloride ions, which are surrounded by water molecules.
Factors affecting dissolving:
* Temperature: Generally, higher temperatures increase the rate of dissolving.
* Agitation: Stirring or shaking helps dissolve the solute faster.
* Particle size: Smaller solute particles dissolve faster.
* Nature of solute and solvent: Polar solutes dissolve well in polar solvents (e.g., sugar in water), while nonpolar solutes dissolve well in nonpolar solvents (e.g., oil in gasoline).
In summary: Dissolving is a physical process where solute particles are surrounded by solvent molecules, forming a homogeneous mixture called a solution. The process is influenced by factors like temperature, agitation, particle size, and the nature of the solute and solvent.
