ŠĻą”±į>ž’ ACž’’’@’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’ģ„Į@ šæ:bjbjīFīF (.Œ,Œ,:’’’’’’ˆrrrrrrrö~~~~š<ö£*¶āāāāāāāā"*$*$*$*$*$*$*$Y+R«-®H*ržāāžžH*rrāā]*ŒŒŒžŽrārā"*Œž"*ŒŒĘŖ(rrņ)āÖ °B¹E¶ŚĘ~,¤:)"*s*0£*N)¤Y.Š²Y.(ņ)†DŹ,rrrrY.rņ)0ā ‚rŒō\PNāāāH*H*ööś„‚ ööśall matter are composed of atoms (microscopic particles) to form a line 1 mm long 4 million of the largest atoms are needed basic types of atoms are called elements there are 118 elements examples of elements: oxygen, silicon, aluminum, copper, iron, calcium, gold, silver each element has a unique set of chemical and physical properties that distinguish it from all other elements Symbols of elements each element has a unique symbol that is internationally recognized symbol of an element consists of one to three letters element symbol oxygen O silicon Si aluminum Al copper Cu iron Fe calcium Ca gold Au three letter symbols are used for newly discovered unnamed elements first letter of the symbol is always capitalized or uppercase; 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