Show:
Ns, Ps, Es
Scientists - I
Scientists - II
Experiments/Model
Potpourri
100
Protons
What is the part of an atom with a positive charge?
100

John Dalton

Who is the Father of the Atomic Theory?

Who developed the Law of Partial Pressures of Gases

100

Used Brownian motion to substantiate the existence of atom. 

Who was Einstein?

100

cathode-ray tube

What did J.J. Thomson use for his electron experiment?

100

Water

What did Thales believe was the origins of all matter? What is a compound that Dalton used to explain the ratios of atoms in a compound?

200

Ions

What are charged atoms, resulting from the gain or loss of electrons?

200

Democritus 

Who is known for "atomos"--indivisible? 

200

Uncertainty Principle - cannot know the energy AND location of an electron at the same time

What principle was developed by Heisenberg and then used by Schrodinger?

200

Developed model of the Hydrogen atom

Who is Bohr?

200

John Dalton's Atomic Theory

What states: 1. All matter is composed of atoms; 2. All atoms of the same element are identical in size, mass, and properties; 3. Atoms cannot be subdivided, created, or destroyed; 4. Atoms of different elements combine in whole number ratios; 5. In chemical reactions, atoms are rearranged, separated, or combined?

300

Isotopes

What are atoms of the same element with different masses, due to different numbers of neutrons?

300

Thales

Who proposed water as the basic structure of matter?

300
Used the photoelectric effect and noted light could be treated as a particle

Who was Einstein?

300

gold foil

What experiment did Rutherford and his colleagues perform to discover the nucleus?

300

indivisible

What does the Greek word "atomos" mean?

400
Electrons
Which particle in an atom has the smallest mass?
400

J. J. Thomson

Who discovered the electron?

400

Worked with Rutherford at the University of Manchester and discovered the neutron.

Who was James Chadwick?

400

Neils Bohr

Whose experiments led to the suggestion that electrons travel around the nucleus in paths?

400

Aristotle

Who is known for 4 elements - earth, air, fire, and water?

500

1/12 the mass of a carbon-12 atom

What is an atomic mass unit?

500

Ernest Rutherford

Who discovered the nucleus?

500

Discovered radium and polonium.  Increased understanding of radioactivity.

Who was Marie Curie?

500

Quantum Mechanical Model of the Atom

What is Schrodinger's model of the atom?

500

Packet of light

What is a photon?