chem h matter quiz

anything that occupies space and has mass. its the “stuff” the universe is made out of.

Matter

form of matter that has a definite composition and distinct properties (water,ammonia,sucrose,gold,oxygen)

substance

3 states of matter

solid, liquid, gas

has definite shape and volume

solid

has definite volume but not necessarily shape - takes the shape of the container

liquid

has no definite shape or volume - expands to completely fill and take the shape of its container

gas

can be observed w/o changing the composition of the matter

physical property

ability to form new substances. can only be observed by changing the composition of a substance.

chemical property

change in physical properties but no change in compostion

physical change

involves a change in composition, a new substance is formed. also known as reactions

chemical change

combination of two or more substances in which the substance retain their distinct identities. can have a variable composition.

mixture

composition of the mixture is the same throughout

homogenous mixture

composition is not uniform throughout

heterogenous mixture

separate a mixture into its pure components - distillation or magnet

physical means

always have the same composition, either elements or compounds

pure substances

building blocks to matter, cannot be broken down into other substances by chemical means

elements

substance composed of atoms of two or more elements chemically united in fixed proportions. always contains atoms of different elements.

compound