Chapter 22 - Solvents Flashcards
What is a solute?
A solute is the substance that dissolves in a solvent to make a sol
What is a solution?
A solution is a mixture of a solute and solvent.
What is a soluble substance?
A substance that dissolves in water.
What is an insoluble substance?
A substance that doesn’t dissolve in water.
What is the difference between melting and dissolving?
Melting only needs on substance as dissolving needs two.
What is a suspension? Give an example.
A suspension is a solid added to a liquid which becomes scattered through the liquid. Muddy water is a suspension - mud particles in water.
What is a dilute solution? Give an example.
A dilute solution has a small amount of solute in a large amount of solvent. Diluted orange squash is a dilute solution.
What is a concentrated solution? Give an example.
A confederated solution has a large amount of solute and a small amount of solvent. Orange squash (in the bottle) is a concentrated solution.
What is a saturated solution?
A saturated solution is one that contains as much dissolved solute as possible at a given temperature.
What is the solubility of a substance?
The solubility of a substance is its mass that will dissolve in 100g of solvent at a fixed temperature.
What is a solubility curve?
A graph showing how the solubility of a substance varies with temperature.
What is crystallisation?
Crystallisation is the formation of crystals when a hot saturated solution is cooled or when the solvent is allowed to evaporate from the solution.
What is a solvent? Give an example.
A solvent is a substance that dissolves other materials to form a solution e.g. Water
