Atomic Structure Vocabulary Flashcards

(460 BCE - 370 BCE) was an ancient Greek philosopher. He is known for his influence on modern science. He believed all matter consisted of small particles he called "atomos".

From Greek word which means "uncut" or "indivisible".

(384 BC – 322 BC) was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His model of fire, earth, water, and air.

Was an English chemist, meteorologist and physicist. He is best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness.

Proposed the theory that all matter is made up of individual particles called atoms, which cannot be divided smaller.

Was a British physicist. In 1897, Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, and thus is credited with the discovery and identification of the electron.

Spherical Ball Model

Plum pudding model

Was a New Zealand-born physicist and chemist who became known as the father of nuclear physics. He is considered the greatest experimentalist since Michael Faraday.

Publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons

Was a student Rutherford. He was asked to find out what happens to alpha particles when they pass through gold foil.

Was a French-Polish physicist and chemist, famous for her pioneering research on radioactivity.

Is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911 as a result of Rutherford's interpretation of the 1909 Geiger-Marsden gold fold experiment performed by Hans Geiger andErnest Marsden under Rutherford's direction.

In 1897 when Henri Becquerel researched the newly discovered X-rays it led to studies of how uranium salts are influenced by light. By accident, he discovered that the uranium salts spontaneously emitted a penetrating radiation that could be registered on a photographic plate.

Consist of two protons and two neutrons bound together into a particle identical to a helium nucleus.