The exam is just a few days away and you need to refresh the material? Looking for reliable information for a report? Here you will find all the chemistry topics you will need for your studies!
The colours of the observed sky change depending on the time of day. In cloudless conditions, in the afternoon hours, an intense blue is visible, but at sunrise and sunset, yellow, orange and red colours appear. The colours we see in the sky are the result of an optical phenomenon called Rayleigh scattering.
The transformations occurring in atomic nuclei, which are the result of transition into an energy state other than the lowest possible, are referred to as nuclear disintegration. The formation of such low-stability nuclei may result not only from laboratory conditions but also from changes occurring naturally. That subtype of unstable nuclei is called radioactive nuclei. […]
It is a mathematical operation that involves the formation of mixed electron orbitals by a linear combination of appropriate wave functions. The work on that issue dates back to 1931, when Linus Pauling suggested the answer to the structure of methane – as a spatial arrangement of bonds. The bond in such molecules as diatomic […]
The term “element” refers to atoms whose nuclei contain a particular number of protons. Apart from them, an atomic nucleus also consists of other molecules: neutrons. Their number within a single element may vary. In such a case, we talk about isotopes, i.e. variants of a given element that have different numbers of neutrons in […]
It is one of two principal divisions of analytical chemistry, which deals with detecting chemical elements, functional groups or ions existing in the tested structure. In terms of the methods used, we can divide chemical analysis into classical analysis and instrumental analysis. Classical analysis relies on methods based on chemical reactions which may be carried […]
It is a division of analytical chemistry that deals with determining the structure of the analysed chemical compound, including the atoms it contains and the way they are interlinked. It covers a whole set of techniques that enable the acquisition of such information. We often carry out a full range of structural analyses if we […]
Quantitative analysis is a division of analytical chemistry that deals with assaying the contents of the ingredients in the tested compound or mixture. The methods used in such an analysis can be divided into two main groups: classical methods and instrumental methods. Classical methods, which are also referred to as chemical methods, require various reactions, […]
In everyday life, individual, pure substances are rare to come by. We are much more often faced with their mixtures. Examples can include tea, milk or metal alloys. A mixture is a combination of two or more substances obtained by physical methods (which means there are no chemical bonds between them). If individual components of […]
Oxyacids are an extremely important group of chemical compounds that have a number o specific properties. They are characterised by the presence of at least one atom of oxygen in the acidic radical. They are an important raw material in many industrial processes. Oxyacids are used in the chemical, pharmaceutical, paper and other industries.
We fashion our Academy based on the needs of our users. We study their preferences and analyse the chemistry keywords through which they search for information on the Internet. Based on this data, we publish information and articles on a wide range of issues, which we classify into various chemistry categories. Looking for answers to questions related to organic or inorganic chemistry? Or maybe you want to learn more about organometallic chemistry or analytical chemistry? Check out what we have prepared for you! Keep up to date with the latest news from PCC Group Chemical Academy!
