mass
the amount of matter in an object
volume
the amount of space occupied by an object
extensive
properties of matter like volume, mass, and amount of energy.
intensive
property that doesn't depend on the amount of matter present (melting point, boiling point)
substance
matter that has the same composition and properties throughout
physical property
characteristic that you can observe without changing the composition of the substance
solid
definite shape and definite volume
liquid
no definite shape but definite volume
gas
no definite shape or volume
physical change
Change that does not produce new substances
mixture
blend of two or more substances
heterogeneous
not uniform throughout
homogeneous
uniform throughout
solution
homogeneous mixture
sublimation
change from a solid directly to a gas
evaporation
to change from a liquid to a gas
condensation
change from a gas to a liquid
phase
part of a sample with uniform properties and composition
filtration
separating a solid and a liquid using paper and a funnel
distillation
a liquid is boiled to produce and vapor that is condensed
element
simplest form of matter
atom
smallest particle of an element
compound
substance containing two or more elements chemically combined
chemical change
change that produces new substances
chemical property
a characteristic that cannot be observed without altering the substance
formula
a combination of symbols that shows the ratio of elements in a compound
symbols
elements are represented by
reactant
a substance present at the start of a reaction
product
a substance produced in a reaction
precipitate
solid that forms and settles out
law of conservation of mass
matter is not created or destroyed
reaction
a chemical change