The law of definite proportions and constant composition do not prove that atoms exist, but they are difficult to explain without assuming that chemical compounds are formed when atoms combine in constant proportions.
Hukum perbandingan tetap dan komposisi konstan tidak membuktikan bahwa atom ada, namun sulit untuk dijelaskan tanpa mengasumsikan bahwa senyawa kimia terbentuk saat atom bergabung dalam proporsi konstan.