History of the Atom

Front

What model was created after the discovery of the nucleus?

Back

Rutherford's model.

Front

Who was the first person to 'think' of an atom?

Back

Democritus.

Front

What does the word 'atomos' mean?

Back

Uncuttable or indivisible.

Front

What experiment was used to discover the nucleus?

Back

Gold Foil experiment.

Front

Which model is known for the concept of a solid, indivisible atom?

Back

Dalton's Model.

Front

What did J.J. Thomson discover about the atom?

Back

He discovered the electron.

Front

What is the main idea of Rutherford's model of the atom?

Back

The atom has a small, dense nucleus surrounded by electrons.

Front

What did Bohr contribute to atomic theory?

Back

He proposed that electrons orbit the nucleus in fixed paths.

Front

What is the Plum Pudding model?

Back

A model that describes the atom as a sphere of positive charge with electrons embedded in it.

Front

What is the significance of the Gold Foil experiment?

Back

It led to the discovery of the atomic nucleus.