define the following terms:
1.valency
2.chemical equation
3.galvanization
4.rusting
5.crystallization
6.reactants
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1. Valency is the combining power or the combining capacity of an atom. ... Valency of a particular element is determined by the electrons present in the last shell. If the number of valence electrons is less than or equal to 4, valency is equal to the number of valence electrons.
2. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
3. Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc.
4. Rust is a general name for a complex of oxides and hydroxides of iron, which occurs when iron or some alloys that contains iron are exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal forming new compounds collectively called rust. Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Here is the word equation for the reaction: iron + water + oxygen → hydrated iron(III) oxide.
5. DescriptionCrystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
6. In a chemical reaction, reactants are consumed, while the products are generated. We can understand reactants and products with an example, say photosynthesis. In this reaction, the reactants are carbon dioxide, water and sunlight; while the products are glucose and oxygen.
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2. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
3. Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc.
4. Rust is a general name for a complex of oxides and hydroxides of iron, which occurs when iron or some alloys that contains iron are exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal forming new compounds collectively called rust. Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Here is the word equation for the reaction: iron + water + oxygen → hydrated iron(III) oxide.
5. DescriptionCrystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
6. In a chemical reaction, reactants are consumed, while the products are generated. We can understand reactants and products with an example, say photosynthesis. In this reaction, the reactants are carbon dioxide, water and sunlight; while the products are glucose and oxygen.
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