Pure substances and Mixtures
Describes a substance that will dissolve in a liquid.
A method of separating magnetic materials from nonmagnetic ones.
What is Magnetic separation?
Change state from solid to liquid.
Is made of 2 or more materials physically combined; can be separated
Describes a substance that has mixed completely with a liquid so that it is no longer visible.
A separation technique that uses evaporation to separate the parts of a solution. The solvent evaporates and leaves behind the solute as crystals.
What is crystallisation?
Change state from liquid to gas.
A colloid with droplets of one liquid spread evenly through another e.g. homogenised milk
What is an emulsion?
Describes a solution containing a small amount of solute
Separating a mixture by rotating the container quickly. The heavier parts of the mixture move to the outside of the spinning container.
What is centrifuging?
Change state from gas to liquid.
Has a different appearance and composition throughout.
A mixture of a gas or liquid and an insoluble substance. The insoluble substance settles to the bottom when the mixture is left to stand.
A mixture is heated so that one substance evaporates. The vapour is collected and condenses into a liquid.
Change state from liquid to solid.
Has the same appearance and composition throughout.
What is a Homogenous mixture?
A solute dissolved in a solvent
process of separating out parts of chemical mixtures (usually colours) dissolving them onto an absorbent material (usually paper)