Atomic Theory

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

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?

Back

J.J. Thomson

Front

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

Back

Dalton

Front

Ernst Rutherford discovered which part of the atom through the use of gold foil?

Back

Proton

Front

Niels Bohr suggested that electrons...

Back

are found in specific orbits

Front

Sequence of scientists who made major changes in the model of the atom:
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford

Back

3, 1, 5, 4, 2

Front

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

Back

contains negatively charged particles