-
mass
measure of the amount of matter the object contains
-
volume
meausre of the space occupied by the object
-
extensive property
property that depends on the amount of matter in a sample (quantity, how much)
-
intensive property
property that depends on the type of matter ina sample, not the amount of matter (structure, reaction itself)
-
substance
matter that has a definite and uniform composition
-
physical property
quality or condition of a property that can be observed or meausred without changing the substances composition
-
solid
form of matter that has a definite shape and volume, doesnt depend on shape of container
-
liquid
form of matter that has an indefinite shape, flows, yet has a fixed volume
-
gas
form of mastter that takes both the shape and volume of its container
-
vapor
describes gaseous state of a substance that is genereally a liquid or solid at room temperature
-
physical change
some properties of a material change, but the compostion of the material does not change
-
mixture
physical blend of two or more compounds
-
heterogenous mixture
mixture in which the compostion is not uniform throughout
-
homogenous mixture
mixture in which the composition is uniform throughtout. aka. solution
-
phase
used to describe any part of a sample with uniform composition and properties.
-
filtration
process that seperates a solid from a liquid in a heterogenous mixture
-
distillation
a liquid is boiled to produce a vapor that is then condesnsed into a liquid
-
element
simplest form of matter that has a unique set of properties ex. oxygen plus hydrogen
-
compound
substance that contains two or more elements chemically combined in a fixed proportion ex. sucrose
-
chenical change
change that produces matter with a different composition then the original matter. ex- heating
-
chemical symbol
one or two letter symbol that represents an element
-
period
horizontal row of the periodic table of elements
-
group
each veritcal column
-
chemical property
ability of a substance to undergo a specific chemical change. ex. ability to rust
-
chemical reaction
one or more substances changes into one or more new substances
-
reactant
substance present at the start of a reaction
-
product
substance produced in the reaction
-
precipitate
a solid that forms and settles out of a liquid mixture
-
law of conservation of mass
states that in any physical change or chemcial reaction mass must be conserved. mass is neither created nor destroyed
|
|
