As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to Earth's atmosphere. Topics covered in the overview include structure of the atmosphere, composition of the atmosphere, energy balance of the atmosphere and earth, and more.

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals specifically with a series of gas laws including Boyle's law, Charles and Gay-Lussac's law, and Avogadro's law.

With an overview of topics related to chemical energetics, this site provides a foundation to a study of thermodynamics and its relation to energy, heat, and work.

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses Niels Bohr and his work with the atom. Topics covered in the discussion include the atom before Bohr, Bohr's orbital model, how Bohr's theory explains the hydrogen spectrum, and more.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the Earth, and specifically the Earth's crust. Other topics covered include chemistry of the crust, composition of rock, distribution of elements, and more.

This site examines the specific difference between mass and weight in addition to length, temperature, and time.

With an overview of topics related to chemical equilibrium, this site provides a foundation to a study of thermodynamics with specific attention on the second law.

As part of the Virtual Textbook, this site examines all things related to Atomic Theory including information on atoms, molecules, formulas, equations, nomenclature, and more.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the hydrosphere and the oceans. Topics covered include where the water came from, the hydrologic cycle, Oceanic circulation, atmospheric circulation, surface currents of the oceans, and more.

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with the shared-electron covalent bond and related topics such as the octet rule, electron-dot formulas, lone pair electrons, and more.

Acting as an overview from the General Chemistry Virtual Textbook, this site explores topics related to the various types of acids and bases. The topics covered include binary hydrogen compounds, hydroxy compounds, oxygen compounds, and more.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to entropy. Other topics covered include how thermal energy is stored in molecules, quantum states, microstates and energy spreading, and more.

Covering a range of eight topics related to chemistry, this resource provides a wealth of information complete with pictures, charts, graphs, and examples. Includes information on elements, compounds, atoms, molecules, structures, formulas, and more.

With an overview of topics related to chemical energetics, this site provides a foundation to a study of thermodynamics and its relation to entropy. Information on the topic ranges from reversible and irreversible changes to standard entropies of substances.

A work in progress, CK-12 Chemistry Teacher's Edition supports its Chemistry book covering: Matter; Atomic Structure; The Elements; Stoichiometry; Chemical Kinetics; Physical States of Matter; Thermodynamics; Nuclear and Organic Chemistry.

A Child's History Of England by Charles Dickens offers the opportunity to learn the history of England as told by one of the finest storytellers of English literature. The book begins with Roman Britannia and proceeds chronologically to Queen Victoria.

The complete text of this literary work is available to download or read online in multiple digital formats.

Read what a cloud is and how to identify three different types. Includes audio narration in English and Turkish with text in English.

Translated by William James Hickie, this full version of the Aristophanes comedy, The Clouds, is presented in multiple digital formats.

The complete text of this literary work is available to download or read online in multiple digital formats. Includes an introduction, a biographical note and an appendix of poems about or to Rupert Brooke.