Atomic Theory Video Questions

Who first proposed that everything was made up of tiny particles?

• Democritus

• Aristotle

• John Dalton

• Niels Bohr

What did Aristotle believe matter was made of?

• Chocolate chip cookies

• Earth, wind, water, and fire

• Electrons

• Atoms

Who is known as the father of the nuclear age?

• J.J. Thompson

• Ernest Rutherford

• Democritus

• John Dalton

What did J.J. Thompson discover?

• The nucleus

• The electron

• The neutron

• The proton

What model did Niels Bohr propose?

• Aristotelian model

• Chocolate chip cookie model

• Planetary model

• Quantum model

What did Werner Heisenberg's uncertainty principle show?

• Atoms are indivisible

• It's impossible to determine both position and speed of electrons

• Electrons orbit the nucleus at fixed energies

• Atoms consist largely of empty space

What did the experiments show about electrons?

• They behave only as waves

• They behave only as particles

• They can be pinpointed at all times

• They behave both as particles and waves

What did Rutherford's gold foil experiment suggest?

• Atoms can be divided infinitely

• Atoms are uniformly packed spheres

• Atoms consist largely of empty space

• Atoms are solid throughout

What causes the colors in fireworks?

• Electrons shifting between energy levels

• Atoms splitting

• Nuclei colliding

• Particles vibrating

Who lived modestly until the end of his days despite many honors?

• John Dalton

• Ernest Rutherford

• Democritus

• Niels Bohr