Atomic Theory Flashcard

Front

What are the positive particles of an atom called?

Back

Protons.

Front

What did J.J. Thomson's experiments reveal about the structure of the atom?

Back

Atoms contain negatively and positively charged particles.

Front

What significant discovery was made from Rutherford's gold foil experiment?

Back

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

Front

What is the most recent model of the atom proposed?

Back

Electron cloud model of the atom.

Front

According to Niels Bohr, where are electrons found in an atom?

Back

Electrons are found in specific orbits.

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the charge of electrons?

Back

Electrons have a negative charge.

Front

What is the role of neutrons in an atom?

Back

Neutrons are neutral particles that contribute to the mass of the atom.

Front

What is the atomic nucleus composed of?

Back

The atomic nucleus is composed of protons and neutrons.

Front

How did Rutherford's experiment change the understanding of atomic structure?

Back

It showed that atoms have a small, dense nucleus, changing the view from the plum pudding model.