Structure of Atoms
Who is the teacher of Democritus?
Leucippus
What are the subatomic particles of an atom?
protons, neutrons, and electrons.
What is the charge of neutrons?
Positive
Who discovered the electron?
A.) J.J. Thomson B.) J. Chadwick C.) Eugen Goldstein
A. J.J Thompson
Around what year did Democritus and Aristotle started their theory about atom?
Around 440 BCE
If an atom was the size of a football stadium, how big would the nucleus be? A. a sunflower B. a bee C. a human D. an elephant
B. a bee
Who discovered the electron?
A.) J.J. Thomson B.) J. Chadwick C.) Eugen Goldstein
B.) J. Chadwick
How many carbon atoms wide is the average human hair?
one million carbon atoms