Atomic Theory Test Study Aid

Who was the philosopher that first proposed the existence of atoms?

• Aristotle

• Democritus

• JJ Thomson

• Erwin Schrodinger

Which definition best matches the term "Alpha particles"

• the nuclei of hydrogen atoms

• the last particles discovered

• the first particles discovered

• The Nuclei of helium atoms

The Statement "All Matter is composed of tiny, indivisible, and indestructible particles" shows up in which era of atomic history?

• The Rutherford Era (early 1900s)

• The Quantum Era (1920s-now)

• The Dalton Era (early 1800s)

• The Democritus Era (5th century BC)

How did Democritus and co first come up with the atom?

• Experiments using cathode rays

• Experiments using beryllium atoms and alpha particles

• Experiments using primarily human subjects

• Philosophizing and debating, without a whole lot of actual experimentation.

What subatomic particle has no charge or a neutral charge?

• Proton

• Neutron

• Electron

• Megatron

This image shows iron atoms with hooks, which scientist would this idea most likely belong with?

• Schrodinger

• Thomson

• Rutherford

• Democritus

What is a photon?

• Energy emitted when a picture is taken.

• Energy emitted when protons leave the nucleus.

• Energy which is emitted when an electron changes energy levels.

• Energy emitted when an atom breaks down.

What is the term below that describes the positive subatomic particle within the nucleus of an atom?

• Photon

• Proton

• Neutron

• Electron

The word atomos means what?

• Forgettable

• Impracticle

• Invisible

• Indivisible

Which scientist emerged in the year 1803 with his idea that all atoms had essentially the same shape, regardless of what type of atom was being discussed?

• JJ Thomson

• John Dalton

• Democritus

• Ernest Rutherford