Dalton's Atomic Theory (1808)
Law of Conservation of Mass (or matter) - Mass is neither created nor destroyed in a chemical reaction.
Law of Definite Proportions - A given compound always contains the same proportion of elements by mass.
Law of Multiple Proportions - When two elements form more than one compound, the ratios of the masses of the second element that combines with one gram of the first element are always small whole numbers.
Avogadro's Hypothesis - At the same temperature and pressure equal volumes of gases contain the same number of particles.
|Hypothesis proposed to explain the findings of Gay-Lussac. Gay-Lussac measured volumes of gases that would react with each other at a given temperature and pressure.|
1. How does Dalton's Atomic Theory explain the law of conservation of matter, law of multiple proportions, and the law of definite proportions?
2. How has Dalton's Atomic Theory been modified?