evolution of atomic theory

What does the word 'atom' mean in ancient Greek?

• Divisible

• Indivisible

• Tiny particles

• Matter

Who discovered the existence of electrons?

• John Dalton

• Rutherford

• Thompson

• Geiger and Muller

What did Thompson propose about the structure of the atom?

• Atoms are made up of even smaller particles

• Atoms have a positively charged nucleus

• Atoms have negatively charged electrons

• Atoms are like a plum pudding

Which Scientist created this model

• Democritus

• Chadwick

• Bohr

• Rutherford

Which of the following models is considered the Plum Pudding Model?

• 
• 
• 
• 

Developed the “uncertainty principle” that states that it is impossible to determine simultaneously both the position and the velocity of an electron.

• Werner Heisenberg

• James Chadwick

• Henry Moseley