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A chemical change is a process where two substances combine to form one or more new substances. This process is referred to as a chemical reaction, and it is not reversible.


Water is a chemical because it is made of matter. Matter is any object that takes up space and has mass. Although water is a liquid, it still has mass and occupies space.


The systematic names for water, as determined by the International Union of Pure and Applied Chemistry (IUPAC), are water and oxidane, although water is the more commonly used term by chemists. The traditional name has been retained for ease of communication.


Chemical energy is a type of energy that is stored in the bonds that form between different chemical compounds. These bonds exist between different types of atoms and molecules. The energy that is stored inside of these bonds can be released through a chemical reaction, which usually has a number of


A chemical property is a characteristic associated with a substance or reaction that is observable as it chemically changes or transforms into another substance. This chemical change produces a product that has a different composition than the original substance.


Examples of a chemical change include rusting iron, burning wood, frying an egg and baking a cake. A chemical change occurs when the chemical composition of a substance changes irreversibly.


Burning, or rather combustion, leaves you with a different material than the one with which you started. A chemical change occurs if a new substance is created and most of the time cannot be reversed.


Sugar is the name of a group of organic compounds such as glucose, fructose and sucrose. Each of these compounds can be expressed by its own unique chemical formula, almost always as CnHnOn, where "n" is often a number between 3 and 7.


Extraction, distillation, recrystallization and chromatography are different chemical methods of separation. Extraction is useful for separating compounds with different polarities, and distillation is commonly used to purify liquids. Recrystallization is used to purify solids, and chromatography is


Chemical equations are illustrations of the reactants and products in a chemical reaction. Chemical equations are expressed as A + B - C, where A and B are the reactants, and C is the product.