Chemistry: Mixtures and Chemical Reactions

Flashcards covering key terms related to mixtures, separation techniques, and chemical reactions.

Mixture

A combination of different substances that are not chemically joined.

Filtration

A physical process used to separate an insoluble solid from a liquid.

Evaporation

A method used to separate a soluble solid from a liquid by heating, allowing the liquid to evaporate.

Chromatography

A technique used to separate mixtures of colored compounds based on their movement through a medium.

Distillation

A process used to separate liquids in a mixture based on their different boiling points.

Exothermic Reaction

A chemical reaction that releases heat.

Endothermic Reaction

A chemical reaction that absorbs heat.

Chemical Change

A process that results in the formation of new substances with different properties than the original.

R-value (Rf value)

A value calculated to identify compounds in chromatography, determined by the distance moved by the compound divided by the distance moved by the solvent.

Formation of a Precipitate

The creation of a solid that forms when two liquids react chemically.

Insoluble Substance

A substance that does not dissolve in a liquid.

Soluble Substance

A substance that dissolves in a liquid to form a solution.