An article describing Dalton's atomic theory. Learn how this theory was the first attempt to describe a fundamental part of matter, atoms. Article also discusses where the theory is incorrect based on the knowledge we have today.

Article explores the key points of Dalton's atomic theory and the laws of conservation of mass and constant composition. Which points do we still use today?

Resource investigates the beliefs of Dalton's atomic theory which consists of four parts. Which points do we still use today, and what have we learned since Dalton?

Explains the basic tenets of Dalton's atomic theory.

Students will examine how significant scientific theories are developed, explore the work of scientists who contributed ideas to the atomic theory, and develop a timeline of key scientists to show how the work of each one built on the...

Become a game show contestant in this online activity from A Science Odyssey and ask a series of questions to a panel of mystery scientists, using the answers to determine which scientist is Einstein.

This lesson focuses on the structure of atoms. All substances are made from atoms. Each atom is made of a nucleus - containing protons and neutrons - surrounded by electrons. It provides a link to an assessment.

Learn about the models of the atom that have been proposed throughout history. Presents Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and the modern theory of the atom. Sections are accompanied by journal...

A classroom wiki where students present profiles of scientists who developed models of the atom or who contributed to the understanding of atomic theory. Covers Democritus, Aristotle, John Dalton, J.J. Thomson, Ernest Rutherford, Marie...

Describes J.J. Thomson's theory of atomic structure, called the 'Plum Pudding Model,' and how it was disproved by Ernest Rutherford.

Need to review a topic for AP Chemistry? This site features a collection of video lectures covering the curriculum of AP Chemistry. The lectures are broken up by topics and vary in length. Lectures cover thermodynamics, bonding,...

Presented is an overview of atomic theory concentrating on the experiments of Ernest Rutherford.

A learning resource to understand what neutrinos are and their importance to science.

Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....

The website provides an explanation of the electrons' position in their orbitals as they spin around the nucleus. Quantum theory is also explored by explaining that the exact location of a specific electron is a not exact but a guess.

A tutorial that presents models of the atom proposed by John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Each is supported by an animated illustration. Includes comprehension questions and a quiz at the end.

A very descriptive site that allows students to understand the different states of matter at the atomic level. Also discusses the process of phase changes and displays phase change graphs. Thermochemistry is also touched upon for high...

PBS offers a short summary of the discovery of the quantum nature of the atom by Max Planck. Easy to follow.

Explains the function of the Antiproton Decelerator, a device at the European Center for Nuclear Research used to "slow down" bunches of antiprotons for use in experiments.

A description of the two primary experiments conducted at CERN on antimatter: ASACUSA, an attempt to form "Atomcules," using antiprotons; and ATHENA, an experiment to compare the properties of hydrogen and antihydrogen.

At this PBS site there is a biography of the Austrian physicist Erwin Schrodinger who lived from 1887 until 1961.

The nature of insulators is described at the atomic level. Band gap theory is used to explain what distinguishes insulators from conductors.

This chemistry class printout details the main points of molecular geometry and explains bond hybridization and bond angles.