A SOLUTION is the mixture formed when a solid DISSOLVES in a liquid.
A SOLVENT is the substance that does the dissolving (water).
The SOLUTE is the solid (salt) that has dissolved.
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How do you get a solute back?
By EVAPORATING the solvent (if it dissolves - like salt or sugar)
By FILTERING the liquid (if it doesn't dissolve - like sand)
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What is saturation point?
For each solute and solvent, there is a limit to the mass of solute that will dissolve in a particular volume of the solvent.
When no more solute will dissolve, we say that the solution is a saturated solution.
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How can you increase solubility?
1) Raise the temperature of the solution.
This is because particles are moving faster, so more solute will dissolve.
2) Mixing. This cause the particles to move faster and dissolve more quickly.
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What is filtration?
A way to separate an insoluble solid (sand) from a liquid. Filter paper over a funnel above a beaker. Pour liquid into filter funnel.Liquid particles small enough to pass through paper, but solid is too large and stays on paper as residue.
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What is evaporation?
A way to separate an soluble solid (salt) from a liquid. Solution placed in evaporating basin and heated. The volume of solution decreases as the water evaporates. Solid particles start to form in basin. Solid crystals left when water evaporates.
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What is distillation?
A way to separate the solvent from a solution. A salt solution is heated. When the solution is heated, the water evaporates. It is then cooled and condensed into a separate container. The salt does not evaporate and stays behind.
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What is chromatography?
A way of separating dissolved substances from one another, like ink.Draw line on paper, place ink spots on it.Lower paper into container with solvent. Solvent travels up paper, taking coloured substances with it. Different coloured substances spread apart
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What happens during dissolving?
During dissolving, particles of solvent collide with particles of solute and surround the particles of solute, moving them away until the particles are evenly spread through the solvent.
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Other cards in this set
Card 2
Front
How do you get a solute back?
Back
By EVAPORATING the solvent (if it dissolves - like salt or sugar)
By FILTERING the liquid (if it doesn't dissolve - like sand)
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