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Worksheet about Chemical equation and molecular | ||
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| Subject: Chemistry | ||
| 9th Grade | ||
| Term 1 | ||
| Year: 2023/2024 | ||
| Size: 263.5KB | ||
| Number of clicks: 86 | ||
| Publish date:November 06, 2023 | ||
| Added by: Eman | ||
| Last download date: 2024-09-01 17:23:01 | ||
| Updated by: Eman9966 on 2023-11-06 11:18:15 | ||
| By: theodor Sunil Thapa | ||
File info: Info Chemical Equation:A chemical equation is a symbolic representation of a chemical reaction. It uses chemical formulas and symbols to describe the reactants, products, and the changes that occur during a chemical reaction. A chemical equation consists of two main parts: the reactant side and the product side, separated by an arrow indicating the direction of the reaction. The reactants are written on the left side of the arrow, while the products are written on the right side. For example, the chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O) can be represented as follows: 2 H2 + O2 → 2 H2O This equation indicates that two molecules of hydrogen gas react with one molecule of oxygen gas to produce two molecules of water. Molecule:In chemistry, a molecule is a group of two or more atoms held together by chemical bonds. It is the smallest unit of a chemical compound that retains the chemical properties of that compound. A molecule can consist of atoms of the same element or different elements. Molecules can vary in size, complexity, and structure. They can be simple, such as diatomic molecules like oxygen (O2) or more complex, such as organic molecules like glucose (C6H12O6). Molecules can exist as discrete units or form larger structures through intermolecular forces. The arrangement of atoms within a molecule is determined by the type and number of bonds between the atoms. These bonds can be covalent, where atoms share electrons, or ionic, where atoms gain or lose electrons to form charged species. The way atoms are bonded together in a molecule influences its physical and chemical properties. Molecules play a crucial role in chemical reactions and interactions. They participate in the formation and breaking of bonds, resulting in the transformation of substances. Understanding the structure and behavior of molecules is fundamental to various scientific disciplines, including chemistry, biochemistry, and molecular biology. | ||
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