CLASS 5 · LEARNING KNOWLEDGE
Dissolving and mixing – basic principles
How it works
When dissolving and mixing, substances are combined with one another. During dissolving, a substance (e.g. salt) dissolves in a solvent (e.g. water) and forms a solution. During mixing, the substances remain as separate parts, as with sand and sugar. Not all substances dissolve in every solvent. Solubility depends on the substance and on the solvent. Solutions are often transparent; mixtures can be cloudy. Solutions and mixtures can be separated back into the starting substances by various separation methods.
Note
During dissolving, a substance dissolves in the solvent and forms a uniform solution; during mixing, the substances remain as separate components.
During dissolving, a substance dissolves in the solvent and forms a uniform solution; during mixing, the substances remain as separate components.
An example
What happens when you put salt in water and stir it?
The salt dissolves in the water and forms a clear solution. You can no longer see the salt because it has distributed itself evenly.
Try it yourself now
50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.