In chemistry, the term "hydrate" refers to a substance that contains water, while an anhydrous substance contains no water. Hydrates and anhydrates differ greatly in their reactions to water and their common uses.Know More
In organic chemistry, a hydrate is formed by the addition of hydrogen to another molecule to form a compound. Examples of organic hydrates are chloral hydrate, created from the reaction of hydrogen with chloral, and ethanol, formed when hydrogen is added to ethylene. In inorganic chemistry, the hydrate compound is formed when the compound contains water of crystallization. This happens when the hydrogen molecules have crystallized within the metal complex of the original molecule, or are bound to its metal center without changing the structure of the molecule.
By contrast, an anydrate or anhydrous material does not contain any water molecules. The water is usually removed by suction or by heating the substance to a high temperature. Anhydrous materials are typically used as drying agents because they absorb water from their surroundings. One example is a silica gel packet often included inside clothing pockets or other consumer goods to keep the surrounding area dry and mold-free. Many common anhydrates are quite dangerous to handle. Anhydrous ammonia, for example, is a pungent gas used as a fertilizer. The pungent fumes from this gas can suffocate a human and are extremely flammable. If ingested, it can cause quick dehydration.Learn more about Chemistry
There is a direct relationship between absorbance and concentration is the higher the absorbance of a substance, the more concentrated its solution will be in water or another medium. In chemistry, this is a principle known as the Beer-Lambert Law.Full Answer >
Chemistry Regents examinations are standardized tests that are administered by the state of New York for the purpose of checking high school students' competency at chemistry. In order to graduate high school in New York, students as of 2012 are required to pass at least one science exam, including chemistry.Full Answer >
The study of chemistry is integral to the study of pharmacy, since pharmaceutical science studies how different medications react chemically with the chemicals within the human body. Life itself can be summarized as the sum total of chemical reactions within an organism. Pharmaceutical substances are designed to control or otherwise alter those reactions. Pharmacists are experts in dosages and related topics, while pharmaceutical science studies the chemistry.Full Answer >
According to Duke University, nuclear chemistry is at play in a variety of aspects of daily life, including the warmth and light of the sun. The sun itself would not exist without nuclear chemistry.Full Answer >