오늘은 화학입니다. 아마 매일 적는다면 격일로 물리와 돌아가며 적을 것 같습니다. Molecules and molecular compounds - Molecules and chemical formulas - Chemical formula - H2O is example, this shows how water composed. two hydrogen and one oxygen.- Diatonic molecule A molecule made up of two atoms- Molecular compounds Compounds composed with more than two types of atoms. - Molecular and empirical formulas - molecular formulasChemic..