This is a powerpoint presentation that discusses about the topic or lesson: Dalton's Atomic Model. It also includes the history of John Dalton, characteristics and concepts of Dalton's Atomic Model.

1. Dalton’s Atomic
Model

2. John Dalton
• September 7, 1766 – July 27, 1844
• An English chemist, physicist and
meteorologist
• One of the pioneers of the development of the
modern atomic theory
• Daltonism – it is the concept of Dalton’s
research about color blindness

3. John Dalton
• In 1803, he published his first table on relative
atomic weights. He computed the atomic
weights from the percentage composition of
compounds
• He also contributed on Gas Laws

4. John Dalton’s Atomic Theory
1. Elements are made of extremely small particles called
atoms.
2. Atoms of a given element are identical in size, mass,
and other properties; atoms of different elements differ
in size, mass, and other properties.
3. Atoms cannot be subdivided, created, or destroyed.
4. Atoms of different elements combine in simple whole-
number ratios to form chemical compounds.
5. In chemical reactions, atoms are combined, separated,
or rearranged.

6. Billiard Ball Model
• Dalton’s atomic model
• Created in 1803
• Represented as a tiny indivisible uniformly dense,
solid sphere
• Elements are comprised by tiny particles called
“atoms”
• Atoms can’t be divided, destroyed or created
• Atoms of two or more elements combine to form
a compound
• Has no nucleus
• Become the basis for future atomic model

7. Billiard Ball Model
• Atoms are of the same size and same
component as the element
• Dalton thought that atoms are empty inside