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WorksheetsHistory of the Atom
Total questions: 10
Worksheet time: 1hrs 3mins
Used the word "atomos" to decsribe the uncuttable (indivisible) atom.
Democritus
Thomson
Bohr
Dalton
What did Aristotle say the four main elements were?
Earth, air, fire, water
Ice, Water, Steam, clouds
Dirt, rocks, sand, cement
Silicon, Gold, Silver, Carbon
John Dalton said that all atoms of the same element are _________________.
identical
indestructible
indifferent
ironic
Which scientist discovered the electrons?
Dalton
Thomson
Atristotle
Bohr
What is a particle with one negative charge called?
electron
proton
quark
neutron
What is a particle with one positive charge called?
proton
electron
neutron
quark
Bohr discovered that electrons are located in
the nucleus
inside protons
electron cloud
circular orbits around the nucleus
Bohr's model of the atom was called
Plum Pudding
Billiard Ball
Nuclear Model
Planetary Model
The “fuzzy” representation of electron locations in the quantum mechanical model is called a(n) ________ _____.
electron cloud
atomic cloud
fuzzy area
atom cloud
