▁were ▁provision ally ▁listed ▁as ▁elements . ▁The ▁elements ▁included ▁light ; ▁cal or ic ▁( m atter ▁of ▁heat ); ▁the ▁principles ▁of ▁o xygen , ▁hydro gen , ▁and ▁az ote ▁( nit ro gen ); ▁carbon ; ▁sul fur ; ▁ph osph orus ; ▁the ▁yet ▁unknown ▁" rad ical s " ▁of ▁m uri atic ▁acid ▁( h ydro ch lor ic ▁acid ), ▁bor ic ▁acid , ▁and ▁" flu or ic " ▁acid ; ▁ 1 7 ▁met als ; ▁ 5 ▁earth s ▁( main ly ▁ox ides ▁of ▁yet ▁unknown ▁met als ▁such ▁as ▁mag nes ia , ▁bar ia , ▁and ▁str ont ia ); ▁three ▁al kal ies ▁( pot ash , ▁s oda , ▁and ▁am mon ia ); ▁and ▁the ▁" rad ical s " ▁of ▁ 1 9 ▁organ ic ▁ac ids . ▁The ▁ac ids , ▁regarded ▁in ▁the ▁new ▁system ▁as ▁comp ounds ▁of ▁various ▁elements ▁with ▁o xygen , ▁were ▁given ▁names ▁which ▁indicated ▁the ▁element ▁involved ▁together ▁with ▁the ▁degree ▁of ▁o xygen ation ▁of ▁that ▁element , ▁for ▁example ▁sul fur ic ▁and ▁sul fur ous ▁ac ids , ▁ph osph or ic ▁and ▁ph osph orous ▁ac ids , ▁nit ric ▁and ▁nit r ous ▁ac ids , ▁the ▁" ic " ▁term ination ▁indicating ▁ac ids ▁with ▁a ▁higher ▁proportion ▁of ▁o xygen ▁than ▁those ▁with ▁the ▁" ous " ▁ending . ▁Similarly , ▁sal ts ▁of ▁the ▁" ic " ▁ac ids