General Chemistry

Cements (e.g., Portland cement) harden because of hydration, chemical reactions that occur independently of the mixture’s water content; they can harden even underwater or when constantly exposed to wet weather. The chemical reaction that results when the anhydrous cement powder is mixed with water produces hydrates that are not watersoluble

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Cane-sugar is carbohydrate and as this name implies, is composed of carbon, hydrogen and oxygen. it is a source of extracting sugar. There are various types of sugar derived from different sources. Simple sugars are called monosaccharides and include glucose, fructose and galactose.

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In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons from which one hydrogen atom has been removed are functional groups, called hydrocarbyls.

Portions of the development and history of the hydrogen bomb remain classified. But it is public knowledge that its chief architect was Dr. Edward Teller. The first H bomb (or thermonuclear bomb / fusion bomb) detonated was on November 1, 1952 in Enewetak in the Marshall Islands.

Graphite is used as a lubricant in heavy machines. it is made of carbon atoms arranged in sheets of hexagonal units - looks a lot like chicken-wire. Another sheet forms on top of this and so on. There is no proper connection (in ideal graphite) between the sheets,

Uranium is used to produce a chemical and nuclear reaction which makes a lot of heat. This heat is used to turn water into steam, which turns turbines...turbines generate electricity.

Carbon dioxide is present under pressure in soft drinks. Carbon dioxide adds that special sparkle and bite to the beverage and also acts as a mild preservative. Carbon dioxide is an uniquely suitable gas for soft drinks because it is inert, non-toxic, and relatively inexpensive and easy to liquefy

An atomic pile is a nuclear reactor that uses controlled nuclear fission to generate energy. The most common reactor consists of a large assembly of graphite (an allotropic form of carbon) blocks having rods of uranium metal (fuel).

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The main gas released from car exhausts — carbon dioxide – is one of the major green house gasses. With large amounts of carbon dioxide being emitted into the atmosphere every day, the carbon cycle goes out of balance, and the carbon dioxide gas remains in the earth’s atmosphere, trapping heat and contributing to global warming and climate change.

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