Unit 2 Definitions Flashcards
Mixture
material made up of 2 or more different substances which are. mixed but are not combined chemically.A mixture refers to the physical combination of 2 or more substances on which the identities are retained, ex) sandesalt, sugar, flour.
Compound
- a substance when two or more chemical elements are chemically bonded together. Ex. Sodium metal and chlorine gas combine to form sodium chloride.
Homogeneous
Homogeneous- a mixture of which has uniform composition and properties throughout ex. Air is a homo mixture of gasses, brass is a homo mixture of copper.
Heterogeneous
Heterogeneous -a mixture having a non uniform composition. the composition varies from one region to another, ex) soil, blood, or salt and gravel
Solutions
Solutions- are homogeneous mixtures, composed of two on more substances
Aqueous solution
aqueous Solution - a solution of Some substance dissolved in water. (ag)
Solute
solute - a substance dissolved in another substance, Known as a solvent
Solvent
solvent - a substance that dissolves a solute la chemically distinct liquid, solid or gas) resulting in a solution. A solvent is usually a liquid but can also be solid or a gas ex) solution: solid in liquid: sea water Solute: salt solvent: water.
Soluble
Soluble - capable of being dissored, specially easily dissolved in some solvent (usually H2O)
Insoluble
insoluble - Incapable of being dissolved in some solvent usually H2O
Solubility
Solubility - a chemical property referring to the ability, for a given substance,the solute, to dissolve in a solvent, it’s measured in terms of the maximum amount of a solute dissolved in a solvent at equilibrium.
miscible
miscible - Capable of being mixed (alcohol is miscible with water)
Immiscible
immiscible - not capable of mixing together. (Oil is immiscible with water)
Dilute
dilute - a solution combining a relatively small quantity of solute as compared with the amount of solvent. It can also mean to make a liquid weaker or thinner by adding water or some other solvent to it.
Unsaturated
unsaturated - a chemical solution containing less than the max concentration of a solute dissolved in the solvent. Additional solute can dissolve in an unsaturated solution.