History of an Atom

Neutron was discovered in 1932

____-____ experiment used to determine the electric charge of an atom

Democritus stated that everything was made of ____________.

Mathematical equations were used to describe the likelihood of finding an electron

Rutherford discovered a new noble gas

James Chadwick was born in ________, England.

Proposed the laws of radioactive _______.

Proust proposed that a compound is always composed of the same proportions of elements by volume

Erwin Schrodinger was born in _________.

Robert Millikan was born in ________, Illinois.

In chemical reactions atoms are combined, separated, and rearranged

Where was John Dalton born?

Where was Niels Bohr born?

Fundamental discovery concerning atomic numbers was a milestone in advancing the knowledge of the atom

Where are electrons located in an atom?

Joseph Proust was born in _______, France.

Atoms can be created, destroyed, or subdivided

A particle of matter that uniquely defines a chemical element

Law stated that chemical compounds are formed of constant and defined ratios of elements as determined by mass

Ernest Rutherford was born in ______, New Zealand.

Where was Democritus born?

Where are the neutrons located?

Democritus was the central figure in the developing of the atomic theory.

Electrons have a negative charge.

During Goldstein's research about cathode rays, he discovered ________.

Eugene Goldstein was born in Gilwice, ________

Henry Moseley was born in Afghanistan.

J.J. Thomson was born in Manchester, _____________.

Atomic number is the number of _________ charges in an atom.

Millikan's experiment established the charge on an neutron

Antoine Lavoisier was born in _______, France.

J.J. Thomson proposed the __________ model of the atom

Lavoisier's theory is now known as what?

Bohr well known for his model of an _____.

Lavoisier created the theory of conservation of mass.

______ __________ experiment showed that the atom is mostly empty space