SciencePivot

     N am in g  Binary  C he m i c a l Form u l a Ma n y c h e mic a l compound nam e s c onsist of two w ords. The wo r ds are d er i ved f r om the ions that combine to fo r m the c ompound. Tho s e c ompounds that consist of on l y 2 elem e nts are ca lled bi n ary c o m pou nd s . S ome elem e nts fo r m more than one cov a lent compound with another e le m ent. For e x ample, 2 compounds made of sulphur/sulfur  a nd o x y g e n c ou l d be: S O 2 and SO 3 . The n a mes of bin a r y c o m pounds usual l y e nd with “- i d e ” . This is from the se c ond combining e le m ent. F or e x ample: brom i ne – bromide or sulphur/sulfur – sulphide/sulfide and so fo r th. B ina r y compounds c a n be eith e r ionic or c o valent. Covalent bina r y c ompo u nds (e . g . N 2 O) a re n a med b y followi n g these steps:   1. The fi r st word of t h e name is made up of (a) a prefix ind i c a ting the numb e r o...

 CHEMICAL F ORMULA W hen c h e mist r y w as a y oung s c i e nce and the n u mber of known c ompou n ds was small, it was possib l e to memo r i z e their n a mes. Ma n y o f the n a mes w e r e deriv e d f r om their p h y sic a l ap p ear a n ce , p rop e rti e s, o ri g in, or a pplic a ti o n—for e x ample, milk of m a g n esia, l a u g hi n g g as, l i mestone, c a ustic soda, l y e , w ashi n g sod a , and baking soda.  T od a y the numb e r of k n o wn compounds is w e ll over 20 million. Fortun a te l y , it is not ne ce ssa r y to m e m o ri z e their n a mes. Ov e r t h e y e a rs c h emists have dev i sed a c l e ar s y stem for n aming ch e m i c a l substan ce s.     Mast e ri n g  these rul e s now will pr o ve ben e fi c ial almost i m m ed i a te l y a s we p ro c eed with our stu d y of ch e mist r y .   Writi n g C h e m i c a l F o r m u l as   A fo r mula r e p r es e nts a r e lative number of a ...