an intermediate switch is a switch of 4 terminals which is used to control devices from more than 2 locations if you want to control a device eg lamp from one locati on you use a normal switch you could see two terminals behind it
Fatty acids are made from carbon, hydrogen and oxygen. Fatty acids are constructed from the chemical elements carbon, oxygen and hydrogen. Fatty acids can be divided into a carboxylic acid head groupâhence fatty acidâlinked to a long chain of carbon atoms. The bond between the carbon atoms stores a large amount of biochemical energy and is very stable, allowing fats to be an efficient long-term store of energy in your body.
Water and Carbon Dioxide. In a molecule of water, oxygen is by far the more selfish element. It shares four electrons with two hydrogen atoms. If we assign all four electrons to oxygen, we find that oxygen has an oxidation number of -2, while the hydrogen atoms have an oxidation number of +1. In the compound carbon dioxide, one atom of carbon is sharing eight electrons with two atoms of oxygen.