WorksheetsHistory of Atoms
Total questions: 15
Worksheet time: 15mins
Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?
J.J. Thomson
Ernest Rutherford
Niels Bohr
Albert Einstein
Which scientist proposed a new atomic model after discovering the electron in 1897?
Dalton
Thomson
Rutherford
Bohr
Which experiment discovered the nucleus of the atom?
cathode ray tube
gold foil experiment
heisenberg's uncertainty principle
flame test experiment
Democritus believed that the smallest particles, were atomos, the Greek word for
small
uncut or indivisible
basic
Who is known as the father of modern atomic theory?
John Dalton
Niels Bohr
Albert Einstein
Isaac Newton
Which model of the atom was proposed by J.J. Thomson?
Plum pudding model
Nuclear model
Planetary model
Quantum model
What did Rutherford's gold foil experiment demonstrate about the structure of the atom?
Atoms are solid spheres
Atoms have a dense nucleus
Electrons orbit the nucleus in fixed paths
Atoms are indivisible
Which scientist is credited with the discovery of the neutron?
James Chadwick
Ernest Rutherford
Niels Bohr
J.J. Thomson
What is the main idea of Bohr's model of the atom?
Electrons orbit the nucleus in fixed paths
Atoms are indivisible
Atoms are solid spheres
Atoms have no internal structure
Which ancient philosopher first proposed the idea of the atom as an indivisible particle?
Democritus
Aristotle
Plato
Socrates
What is the significance of the cathode ray tube experiment?
Discovery of the electron
Discovery of the proton
Discovery of the neutron
Discovery of the nucleus
Which atomic model introduced the concept of quantized electron energy levels?
Bohr model
Thomson model
Rutherford model
Dalton model
What did the discovery of isotopes reveal about atoms?
Atoms of the same element can have different masses
Atoms are indivisible
Atoms have a dense nucleus
Electrons orbit the nucleus
Which experiment led to the discovery of the electron?
Cathode ray tube experiment
Gold foil experiment
Oil drop experiment
Double-slit experiment
What was the main conclusion of Dalton's atomic theory?
Atoms are indivisible and indestructible
Atoms have a dense nucleus
Electrons orbit the nucleus
Atoms are made of smaller particles
