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Información general, fórmulas, balanceo de ecuaciones y demás conceptos claves de química.

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Portal de Química - Chemistry Online Education

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Chemical portal: a place for chemistry enthusiasts and professionals alike. Chemistry tools, periodic table, unit converters and more.

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Noticias sobre química e ingeniería.

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Chemical & Engineering News is a weekly news magazine published by the American Chemical Society, providing professional and technical news and analysis in the fields of chemistry and chemical engineering.

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Noticias, avances investigativos y contenido científico actualizado.

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Welcome to the Science Notes and Projects site, where you'll find experiments, projects, and notes for all scientific disciplines and educational levels. We write science articles and make all kinds of printable periodic tables and science graphics.

Periodic Table with 118 Element Names and Symbols

Here's the Science Notes periodic table with the official names and data for all 118 elements.

Comprehensive Chemistry Dictionary

Here's a comprehensive chemistry dictionary. Over time, we're adding full articles for each term.

Lists of Things That Glow

Here are two lists for you. One covers things that glow under black light (fluorescent or phosphorescent), while the other covers things that glow when the lights go out and it's truly dark. Some items produce luminescence both ways:

Essential Chemistry Charts and Tables

Sometimes it's just easier to have a printout of important information. These tables are available as PDF files. You can save these and print them out at your convenience:

Science Demonstrations and Projects

Here are some fun science projects to try:

Science Jokes

We've added a little humor with a collection of science and math jokes. Spend a little time laughing (or groaning) at the lighter side of science. You're welcome to post a reply to tell your own science joke!

Trigonometry Help at Science Notes

Learn to love the triangle. Trigonometry is one of the scientist's basic tools in their mathematics toolbox. Here are a couple of useful printable reference sheets with trig relationships, special triangles and trig identities. Got requests for trig or stats content? Let us know. We both have degrees in math.
Right Triangles Trigonometry Functions
Special Triangles
Trig Tables - SIN, COS and TAN values PDF
Trig Identities Study Sheet
Periodic Table Trends

Metals, Metalloids and Nonmetals
This periodic table shows the elements and locations of the metals, metalloids and nonmetals. It also lists the common properties of metals, metalloids and nonmetals. You can print out the table the same as any of the periodic tables on the site.

List of Metals
This is a list of the elements considered to be the metal elements along with a periodic table highlighting these elements and their common properties.

List of Metalloids
This is a list of the elements considered to be the metalloid or semimetal elements. It also contains a periodic table highlighting the metalloids and their common properties.

List of Nonmetals
This is a list of all the nonmetal elements, their location on the periodic table and the properties of a nonmetal.

Science Projects

Here are some new science projects, plus some old favorites:

How to Grow Crystals

We've got a bunch crystal-growing projects for you. Instructions range from crystals grown with home chemicals to easy lab chemical crystals to try.

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What's New at Science Notes - Periodic Tables and More - Science Notes and Projects

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Welcome to the Science Notes and Projects site, where you'll find experiments, projects, and notes for all scientific disciplines and educational levels. We write science articles and make all kinds of printable periodic tables and science graphics. Here's the Science Notes periodic table with the official names and data for all 118 elements.

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Higher Chemistry - Scotland - BBC Bitesize

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Higher Chemistry learning resources for adults, children, parents and teachers organised by topic.

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A required part of this site couldn’t load. This may be due to a browser extension, network issues, or browser settings. Please check your connection, disable any ad blockers, or try using a different browser.

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A Periodic table to view elements in 3D.

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Welcome to the Chemistry Library. This Living Library is a principal hub of the LibreTexts project, which is a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education at all levels of higher learning. The LibreTexts approach is highly collaborative where an Open Access textbook environment is under constant revision by students, faculty, and outside experts to supplant conventional paper-based books.

Home is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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The LibreTexts libraries collectively are a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education.

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Visualizador de moléculas orgánica e inorgánicas

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Libro de texto virtual de Química Orgánica

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Libro de texto virtual de Química Orgánica

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organic chemistry
principles
interactive problems
animations
advanced topics

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a comprehensive virtual textbook of organic chemistry. Includes interactive problems

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Información sobre temas de química general y orgánica.

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Aquí podrá encontrar
artículos sobre múltiples temas técnicos, científicos y de la vida
cotidiana.