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daltons modlel
Thomson's Model
Rutherford's Modle
100
what year did John Dalton die?
Dalton died in 1844
100
What did Thomson work with?
He worked with cathode ray tubes.
200
what is a atom?
a smallest piece of an element that still represents that emement
200
What did Thomson find out about particles?
They are smaller than atoms (electrons)
300
when did dalton disover the atom?
in the 1700's
300
What did Thomson believe?
He believed that positive energy was spread evenly throughout the atoms.
400
what did dalton study?
chemical reactions
400
What are some examples of a cathode ray tube? (What is it in)
Neon Signs and The Color Display on an ATM screen.
500
what did dalton believe?
atoms cant be divided, created or destroyed.
500
What is an electron?
A particle with one negative charge (1-)
500
who was hw a student of?
Thomson