Top 8 Lesson 1: Atomic Theory (Theories)

All elements consist of atoms that cannot be divided.

• Dalton’s atomic theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Electrons move rapidly in all directions around the atom’s nucleus.

• Dalton’s Atomic Theory

• Thomson’s Model

• Rutherford’s Model

• Bohr’s Model

• Cloud Model

Concluded that the atom is mostly empty spae but has a dense, positive charge at its center.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

All atoms of the smae element are exactly alike and have the same mass. Atoms of different elements are different and have different masses.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Discoverd the protons

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Suggested that electrons move in specific orbits around the nucleus of an atom.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

An atom of one element cannot be changed into an atom of a different element by a chemical reaction.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Suggested that atoms have negatively charged electrons set in a positive phere.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Predicted that fi Thomson’s Model was correct, the charged particles would pass straight throught the foil.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model

Compounds are formed when atoms of more than one element combine in a specific ratio.

• Dalton’s Atomic Theory

• Rutherford’s Model

• Thomson’s Model

• Bohr’s Model

• Cloud Model