![]() Anti-LogarithmsĪnti-Logarithms are the opposite of logarithms, and also have the opposite rule: the number of significant digits in the result is equal to the number of decimal places in the power.įor example, reversing the previous example we get: 10 2. 090, the input has three sig figs, and the output (after rounding) has 3 decimal places. Logarithms use the number of significant digits in the input as the result's number of decimals (mantissa).įor example, in log( 123) = 2. When multiplying or dividing, the result should have as many sig figs as the number with the smallest sig figs. When adding or subtracting two numbers, the result should have as many decimal places as the number with the smallest sig figs. Reported numbers are only significant to the precision of the equipments with which they are measured. Zeros between non-zero digits are always significant. Leading zeros are never significant trailing zeros, however, are significant only if they are part of the measurement. Nonzero digits are always significant, unless one or more of the other rules are violated. Other constants, such as N A, have limited sig figs. Non-measured numbers, such as π, integer counts, definition of units, etc. In chemistry, is is necessary to understand significant figures to ensure results do not imply more precision than they actually have. There are also fun things to try, hardware, free programming books and tutorials, and much more.Significant figures ("sig figs") are the digits that carry precision in a number. There are hundreds of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. The software collection forms part of our series of informative articles for Linux enthusiasts. The collection covers all categories of software. Read our complete collection of recommended free and open source software. Viewer for three-dimensional chemical structuresįull-featured chemistry application for KDE 5ĢD editor for chemical structures and reactionsĪbstract, manage, and coordinate the execution of tasks ![]() Graphical user interface to computational chemistry packages OpenGL molecular graphics system written in PythonĪtomistic simulations of solid state, liquid, molecular and biological systemsĬonverts and manipulates chemical data files General ab initio quantum chemistry packageĬomputes the properties of molecules, ab initioĪb initio computational chemistry software package ![]() Versatile package to perform molecular dynamics Process, visualize, and analyze 3D tomographic data For each application we have compiled its own portal page, providing a screenshot of the software in action, a full description with an in-depth analysis of its features, together with links to relevant resources. So, let’s explore the 16 chemistry tools at hand. Here’s our verdict of the featured software. Hopefully there will be something for interest here for all budding chemists. This article focuses on selecting the best open source software for chemistry. There is a certain logic that scientific software should therefore be released under an open source license. Science really prospers and advances when individuals share the results of their experiments with others in the scientific community. Chemistry therefore plays a significant role in everyone’s lives. We develop and function as a consequence of chemical processes taking place in our body. Each time we breathe, boil a kettle, or strike a match, a chemical reaction takes place. Moreover, at a fundamental level we are all chemists. Another important subdiscipline is physical chemistry which deals with the relations between the physical properties of substances and their chemical formations studying, in particular, atomic, subatomic, macroscopic, and particulate phenomena in chemical systems.Ĭhemistry is found in many different areas including all spheres of industry, research, teaching, forensic science, public health and much more. ![]() These include organic chemistry which studies the structure, properties, reactions, and composition of carbon-based compounds, and inorganic chemistry which deals with non-carbon compounds. There are a number of different branches of chemistry. Chemistry is regarded as the central science, given its close links with physics and engineering, with biology and medicine, and with geology and earth science. It is an extremely vivacious science which deals with a molecular scale and atomic interpretation of the world we live in, helping us to understand that world. Chemistry is the study of matter and the changes it undergoes. ![]()
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