Test 3 Flashcards
Element
A pure substance that can be broken apart by physical or chemical means
Periodic Table
Elements organized into a chart
Compound
Two or more elements chemically combined
Mixture
A combination of two or more pure substances in which each keeps its own chemical property
Heterogeneous
Not blended, distinct, chunky
Homogeneous
Constant composition always has a single base
Solution
Another name for homogeneous
Filtration
Used to separate solid or liquid heterogeneous mixtures
Distillation
Separating by difference in boiling point
Chromatography
Separating mixtures on the basis of tendency of each to travel
Physical Changes
Altering a substance without changing its composition
Example of Physical Change
Bend, grind, split, crumple, crush, boil, freeze, condense, vaporize, melt
Chemical Change
Process of one or more substances becoming new substances
Example of Chemical change
Rust, oxidize, corrode, tarnish, ferment, burn, rot
Substance
Matter that has a uniform and unchanging composition
Physical properties
Characteristics that can be observed or measured without changing composition
Extensive properties
Depend on the amount of substance present
Intensive Properties
not dependent on amount of substance present
Chemical property
Ability of a substance to combine with out change into one or more substances
Solid
Definite shape and volume
Liquid
Takes shape of container, flows, definite volume
Gas
Flows to take mass and volume of container
