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?
The loss of electrons or an increase in oxidation number.
What is oxidation?
Is made of 2 or more materials physically combined; can be separated
Describes a liquid that completely mixes into another liquid.
What is miscible?
A separation technique that uses evaporation to separate the miscible liquids based on boiling points
What is fractional distillation?
The gain of hydrogen or a decrease in oxidation number.
What is Reduction?
a pure chemical substance made of two or more different elements chemically bonded together in a fixed ratio
What is a compound?
Describes a mixture where the particles of the solute remain suspended in the solvent.
What is colloid?
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?
The oxidation state of an uncombined element in its free state is......
What is zero (0)?
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 the solute remains as a solid.
What is simple distillation?
What is the oxidation number of hydrogen in NaH?
What is -1?
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)
True/false Oxidation and reduction always occur simultaneously in a reaction.
What is TRUE?