The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 95
... known , and the general class of chlorides often are grouped together . This type of classification can easily be extended to other ele- ments of the chlorine family in the periodic table , which form compounds similar to the chlorides ...
... known , and the general class of chlorides often are grouped together . This type of classification can easily be extended to other ele- ments of the chlorine family in the periodic table , which form compounds similar to the chlorides ...
Page 108
... known as a methyl group , and CH , CH , - , or simply C2H- , is ethyl . The positions of such groups in the parent hydrocarbon —that is , the hydrogen atoms of the parent alkane that they replace are indicated by numbers ( numbering be ...
... known as a methyl group , and CH , CH , - , or simply C2H- , is ethyl . The positions of such groups in the parent hydrocarbon —that is , the hydrogen atoms of the parent alkane that they replace are indicated by numbers ( numbering be ...
Page 686
... known forms . To this end , a hierarchy of categories is recognized ; for example , an ordinary flowering plant , on ... known , a new species is named , as well as higher taxa , if necessary . If the plant is a new species within a well ...
... known forms . To this end , a hierarchy of categories is recognized ; for example , an ordinary flowering plant , on ... known , a new species is named , as well as higher taxa , if necessary . If the plant is a new species within a well ...
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acid activity addition administration appear atoms became become bonds called carbon cause central centre century charge Charles chemical chemistry Chess China Chinese combined common complete compounds containing continued cultural drugs early economic effect electrons elements energy established example Figure forces four give given groups hydrogen important increased industry involved ions Italy king known land later less literature living major mass materials ment metal methods molecular molecules move natural occur officials orbitals organic original party percent period play political population position possible present properties provinces reaction region remained represented result river rule separation social species structure substances successful temperature tion types United usually various