A chemical reaction happens when one or more substances change to form new substances. For example, when iron reacts with oxygen and water, it forms rust — this is a chemical reaction. A chemical equation is a way to show a chemical reaction using symbols
A chemical reaction is a process in which one or more substances (reactants) change into new substances (products) with different chemical properties. During a chemical reaction, bonds between atoms in the reactants break and new bonds form to create the products. A chemical equation is a symbolic representation of a chemical reaction. It shows the reactants, products, and their relative quantities. For example: 2H₂ + O₂ → 2H₂O This equation means that two molecules of hydrogen react with one molecule of oxygen to form two molecules of water. Chemical reactions and equations are essential in understanding how substances interact, transform, and conserve mass according to the Law of Conservation of Mass
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chemical reactions