PPT Slide
Daltonís Atomic Model, Continued
- Multiple proportions. Atoms of an element have the same mass (postulate 3) and are indivisible (postulate 1).
- How Daltonís postulates help explain the mass laws.
- Mass conservation. Atoms cannot be created or destroyed (postulate 1) or converted into other types of atoms (postul. 2)
- Each type of atom has a fixed mass (postulate 3), so a chemical reaction, in which atoms are just rearranged, cannot possibly result in a mass change.
- Definite composition. A compound is a combination of a specific ratio of different atoms (postulate 4), each of which has a particular mass (postulate 3).
Notes: