Atomic Theory Scientists

Front

What is the charge and density of the nucleus of an atom?

Back

The nucleus of an atom is dense and positively charged.

Front

Who proposed the 'plum pudding' model of the atom?

Back

JJ Thomson proposed the 'plum pudding' model.

Front

What device did JJ Thomson use to discover the negative charge of electrons?

Back

JJ Thomson used the cathode ray tube to discover the negative charge.

Front

Who described atoms as solid hard particles that are constantly moving and exist in different sizes and shapes?

Back

Democritus described atoms as solid hard particles that are constantly moving.

Front

Which model of the atom is associated with Schrodinger?

Back

The Electron Cloud Model is associated with Schrodinger.

Front

What is the main contribution of Ernest Rutherford to atomic theory?

Back

Ernest Rutherford proposed the nuclear model of the atom, showing that atoms have a dense nucleus.

Front

What did Niels Bohr contribute to atomic theory?

Back

Niels Bohr proposed that electrons orbit the nucleus in fixed paths or energy levels.

Front

What is the significance of the cathode ray tube in atomic theory?

Back

The cathode ray tube was crucial in discovering the electron and understanding its negative charge.

Front

Who is known for the discovery of the neutron?

Back

James Chadwick is known for the discovery of the neutron.

Front

What did Democritus theorize about the nature of matter?

Back

Democritus theorized that matter is made up of indivisible particles called atoms.