Democritus
The first person to suggest that matter was made of "atomos"
Who is Democritus?
This English schoolteacher created the first atomic theory
Who is John Dalton?
This scientist discovered the electron
Who is JJ Thomson?
This scientist discovered the nucleus
Who is Ernest Rutherford?
This scientists said electrons move around the nucleus in set paths
Who is Niels Bohr?
The year Democritus made his atomic theory
What is 400 BC?
Dalton also worked this profession
What is a schoolteacher?
The year Thomson discovered the electron
What is 1897?
He used this experiment to discover the nucleus
What is the gold foil experiment?
Bohr's model looked like this in space
What is the solar system?
Democritus is from this country
What is Greece?
Dalton's theory said that atoms of the same element are exactly this
What is identical?
His model of the atom was called this kind of dessert
What is plum pudding?
Most particles went through the foil, showing that atoms are mostly this
What is empty space?
In Bohr's model, electrons moved in this
What are orbits?
Democritus thought atoms could not be this
What is divided?
Dalton's theory helped explain why H2O is never H3O
What is atoms always in set ratios?
In Thomson's model, electrons were like this inside pudding
What are plums?
A few particles bounced back, showing that atoms have this
What is a positive nucleus?
When electrons jump between levels, they give off this
What is energy?
This philosopher's ideas were more widely accepted
Who is Aristotle?
Dalton's theory was based on experiments instead of only this
What is philosophy?
Thomson showed that atoms are made of these smaller parts
What are subatomic particles?
Rutherford's model could not explain the movement of these particles
What are electrons?
Bohr studied this element when building his model
What is hydrogen?