What is boiling?
When a substance changes phase from a liquid to a gas at a fixed temperature. All the particles are involved in boiling.
What is the boiling point?
The temperature at which all the particles in a liquid change to gas during heating.
What does concentrate refer to?
The amount of dissolved substance in a given volume of solvent.
What is condensation?
When a gas cools down and changes into the liquid phase.
What is a crystal?
A small piece of a substance that has many sides and is formed when the substance turns into a solid.
What is crystallisation?
The process where a dissolved solid is separated from a solution by letting the liquid evaporate.
What is a distillate?
The vapor in a distillation that will be collected and condensed into a liquid.
What is distillation?
The process where a pure liquid is separated from a solution. The liquid evaporates and condensate and the solid is left behind as the residue.
What is evaporation?
When a substance changes phase from a liquid to a gas at any temperature. Only the surface particles evaporate.
What is a filtrate?
The liquid passing through the filter paper.
What is filtration?
The process used to separate an insoluble solid from a liquid.
What is a fraction?
A quantity collected from a sample or batch of a substance in a distillation process.
What is fractional distillation?
The process where mixtures of miscible liquids with different boiling points can be separated.
What is an immiscible substance?
When two substances cannot mix (dissolve).
What is an impure substance?
There are different particles present in the substance.
Miscible
When two substances are able to mix (dissolve) with one another.
Mixture
A substance that consists of two or more substances that are not chemically combined together.
Pure substance
All the particles in the substance are identical.
Residue
The solid collected on the filter paper after filtration.
Saturated
A solution in which no more solute can be dissolved in the solvent.
Soluble
A substance is soluble when it can be dissolved in a specific solvent.
Solute
The solid that dissolves into a liquid.
Solution
A homogenous mixture of a solute and a solvent.
Solvent
The liquid into which a solid dissolves.
