Atomic Theory

Front

This particle is found in the nucleus and has no charge

Back

Neutron

Front

This particle is found in the nucleus and has a positive charge.

Back

Proton

Front

Negatively charged particle found outside the nucleus

Back

Electron

Front

Who was the first person to propose a theory about an atom? Options: Democritus, Rutherford, Dalton, Aristotle

Back

Democritus

Front

Rutherford's gold foil experiment provided evidence that...

Back

There is a dense positively charged nucleus at the center of an atom.

Front

J.J. Thomson provided evidence that an atom...

Back

contains negatively and positively charged particles

Front

What contribution did John Dalton make to atomic theory? Options: He discovered that every atom was positively charged., He discovered that every element consisted of one type of atom., He discovered that atoms had nuclei., He discovered that atoms could be divided into smaller parts.

Back

He discovered that every element consisted of one type of atom.

Front

What scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry? Options: J.J. Thomson, Ernest Rutherford, John Dalton, Democritus

Back

John Dalton

Front

What scientist is best known for his "Plum Pudding" model of the atom? Options: J.J. Thomson, Ernest Rutherford, John Dalton, Democritus

Back

J.J. Thomson

Front

Who stated that all atoms of the same element are exactly alike?

Back

Dalton