2 Describe what happens to each mineral within granite during the complete chemical weathering of granite in a humid environment?
Quartz changes to silt and sand
Feldspare changes to clay Ferromagneisan changes to clay
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Burning causes a physical and chemical change to wood. The physical change comes from the cellulose in the cell walls undergoing incomplete combustion and leaving behind ash and charred residue. The chemical changes that occur happen when the organics undergo complete combustion and turn into carbon dioxide and water vapor.
Cleanliness is a term used to describe a neat environment without the presence of dirt or bad odor. It can be termed as 'transparency' if traces of filth, dust or dirt has been removed from glass or transparent materials. It is also used to define organization of things. Sanitation is the complete removal of bacteria or organisms that are known to harm the environment they decide to penetrate or reproduce in. thx a lots...
Is it true that if an chemical reactions that absorb energy will not occur without a source of energy?
If a chemical reaction absorbs energy in order to be complete, the reaction will not occur in the absence of a source of energy. However, note that any environment substantially above absolute zero temperature contains potential energy, and this may be sufficient for the reaction, without requiring any spectacular specific energy source.
THE EXPLANATION OF AN ATOM protons are what make a chemical element. They reside in the nucleus along with neutron,which are slightly heavier but which have no electrical charge. Electrons are much lighter,and revolve around the nucleus in "shells" of given energy levels. Each shells is more stable when it is "complete", and the degree of completeness gives every element its chemical bonding properties.
What energy transformation takes place inside an electric cell when it is part of a complete electric circuit?
The noble gases (helium, neon, krypton, xenon, radon) have complete outer electron shells, and the halogens (fluorine, chlorine, bromine, iodine, astatine) have almost complete outer electron shells. Note that the chemical properties of an element with a complete outer shell are tremendously different from the chemical properties of an element with an almost complete outer shell.
Most Chemical Engineering programs in the USA require at least 4 years to complete. It is quite common for those studying to become Chemical Engineers to take 1 or 2 semesters beyond that to complete all their coursework because of the intensity and difficulty of the curriculum. Some schools recognize this and have made Chemical Engineering officially a 5 year program.