The Covalent Bond or Molecular Bond, are chemical bonds in which there is the sharing of one or more electron pairs between atoms, with the purpose of forming stable molecules, which according to the Octet Theory : ” an atom acquires stability when it has Read more
The Organic Chemistry is a chemical branch studying the carbon compounds or organic compounds, those which are formed by carbon atoms. In short, organic chemistry consists of the study of carbon compounds. Organic compounds are those that contain carbon, hydrogen, oxygen, nitrogen, Read more
Endothermic and Exothermic reactions are quantities that measure the amount of heat (energy) absorbed and released during chemical reactions . They are studied by thermochemistry. What’s the difference between them? Endothermic reaction is one in which there is energy absorption. In this process, energy is Read more
The melting point and the boiling point represent the temperature at which a substance changes state at a given pressure. In the case of the melting point, the substance changes from a solid to a liquid state. The boiling point refers Read more
The greenhouse effect and global warming are two related environmental phenomena. Both are on the agenda for discussions on climate agreements and are topics that need action by all countries in the world, especially the most polluting ones. Differences between Read more
The Model Thomson Atomic was the first model of structure atomic to indicate the divisibility of the atom . According to Thomson, the atom was formed by electrons attached to a sphere where there was a positive electrical charge. History When Joseph John Thomson (1856-1940) studied the existence of subatomic particles, he was Read more
The Covalent Bond or Molecular Bond, are chemical bonds in which there is the sharing of one or more electron pairs between atoms, with the purpose of forming stable molecules, which according to the Octet Theory : ” an atom acquires stability when it has Read more
Thermochemistry is the part of chemistry that studies the amount of heat (energy) involved in chemical reactions. When a reaction releases heat, it is classified as exothermic. The absorption of heat in a reaction, causes it to be endothermic. Thermochemistry also Read more
Chemical elements, also called simple substances, are elements formed by atoms. Currently, there are 118 chemical elements, 92 of which are natural (found in nature) and 26 are artificial and produced in an artificial way. Representation All chemical elements are Read more
