Dalton noticed that 100 g of tin will combine with 13.5 g or 27 g of oxygen. He also noticed that the ratio of 13.5 to 27 is the same as the ratio of 1 to 2. This observation corresponds to
which of the following conclusions?
A. The building blocks of matter are small indivisible components with unique properties.
B. Different gases can be absorbed by water in different proportions based on their masses.
C. Compounds are formed by two or more types of atoms in whole-number combinations.
D. Atoms of different substances are unique, and differ in their size and mass.