![]() In this sense, it has contributed to sciences such as medicine, pharmacy, biology and geology, just to name a few. For example, cosmetics, personal hygiene products, cleaning products, fertilizers, medicines, paints, plastics, fabrics, among many others.Ĭhemistry, in general, has worked in combination with other sciences to achieve impressive advances in the fields of health, environment, transportation, industry and even art. Thanks to this field, a wide variety of products have been created without which we would not be able to conceive of everyday life. ![]() On the other hand, inorganic chemistry studies minerals and artificial products obtained from chemical reactions. ![]() Thanks to this branch, it has been possible to obtain results of great relevance for the progress of medicine, pharmaceutics, ecology, among others. The first one studies the reactions and combinations of hydrocarbons, carbon atoms and their derivatives found in living tissues. Thus, it can be divided into two main branches: organic chemistry and inorganic chemistry. Precisely, chemistry involves the study of chemical reactions that produce important changes. It has its origin in what was called alchemy, which achieved transformations in matter thanks to the reaction that arose from the combination of elements and specific substances. It also investigates how changes occur in it when it undergoes certain processes. It has even helped other sciences to provide effective solutions that have been key to improving life on the planet.īy browsing our selection of chemistry books in PDF format you will find many public domain texts, released for free distribution, that are among the most important in laying the foundation for the study of this discipline.Ĭhemistry can be defined as an experimental science that studies the structure, properties and composition of matter. It will also be useful for you to specialize in one of its branches.Ĭhemistry has been, without a doubt, one of the most important sciences for the significant advances of mankind. But using CHM Viewer, you can safely open these files, because it does not use IE to display HTML files, so it can avoid these potential security issues.Our collection of free chemistry books is indispensable if you wish to study this essential science for the development of society. In Windows OS, some CHM files can not be displayed, while open a CHM file, you will get a message like "Cannot open the file" or "Navigation to the webpage was canceled", that is because some CHM files that you downloaded from the Internet may with some safety issues, so it must be unlocked in order to display. Today, The Internet have a lot of e-books in CHM formatm, it is popular. The CHM's full name is Compiled HTML Help, it is an unique help file format on Windows platform, it's file extension icon is usually a document icon with a question mark, that mean these files are help documentations. Select the "Export as HTML Files" in main menu "File", software will let you specify a folder, this folder will be used to store all output HTML files and images. In addition, CHM Viewer also supports the Export function, you can output the entire contents of your CHM files, save it as HTML files. You can copy the image to the Clipboard, ot save it as JPG/JPEG, BMP, PNG and GIF image file. If your CHM files include images, you can right-click on the image, software will pop up a shortcut menu. The Find function's hot-key is "Ctrl + F", it allows you to easily search the contents of the file. You can also change default font color, viewer background color and hot spot color. ![]() In main menu, select "File" -> "Open" (hot-key is "Ctrl + O"), and choose one (*.chm) file, so you can browse the contents of the file.Īfter the CHM file is opened, in main menu "Option", you can modify the default font, and can zoom in and zoom out default font size, zoom in hot-key is "Ctrl + NUM+" and zoom out hot-key is "Ctrl + NUM-". CHM Viewer is a free software to view CHM format files, it can quickly open the *.chm file, format and display the contents, and it is a completely freeware, easy to use very much.
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