chem classification of matter

matter

anything that has mass and takes up space

pure substances

form of matter with a uniform composition, consists of one type of element or compound

mixtures

a combination of two or more pure substances, when separated components of both types of mixtures yields pure substances 

homogenous 

uniform composition 

heterogenous

nonuniform composition

elements

consists of only one type of atom , can not be simplified or broken down by a chemical reaction ex: sodium helium

compounds

consists of 2 or more types of elements can be further reduced, into 2 or more elements. combination of 2 or more elements in a definite, reproducible way ex: water h2o

homogenous mixtures:

consists of two or more substances that are uniformly distributes down to the molecular level

heterogenous mixtures

does not have uniform composition its components are easily visually distinguishable

evaporation

separate solutions ex: salt in water

sieving

separate larger particles from small particles ex: rocks and pebbles

filtration 

separate small solids from a liquid ex: minerals in water 

magnet

seperate magnetic objects from nonmagnetic ex: iron fillings in sand

hand tools

seperate some types of solids ex: red buttons from a jar