Define chemical reaction?

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Chemical reaction is a process in which one or more substances (reactants) are converted to one or more different substances ( products). Substances are chemical elements or compounds. Reactions occur when two or more molecules interact and the molecules change.

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The substances which take part in a chemical reaction are called reactants. The new substances produced as a result of chemical reaction are called products. In a chemical reaction, reactants are transformed into products. The burning of magnesium in air to form magnesium oxide is an example of a chemical reaction.

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Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

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Chemical reaction are processes in which new substances with new properties are formed.

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*Any chemical change in a matter which involves its transformation into one or more new substances is called a chemical reaction.

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The interaction between two or more chemicals to produce  new chemical compounds

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Chemical reactions are the processes in which new substances with new properties are formed. chemical reactions involve in chemical changes . During chemical reactions, a rearrangement of atoms takes place between the reacting substances to form having entirely different properties.

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Chemical change is irrevercible change. in this new substance is formed

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The reaction in which 2 or more than 2 substances react together and form a new substance with new properties is known as chemical reaction

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Chemical Reaction
Chemical reactions are processes in which one or more substances, known as reactants, are converted into one or more different substances, known as products. These reactions involve the breaking and forming of chemical bonds between atoms.

Types of Chemical Reactions
- Synthesis Reactions: Two or more substances combine to form a single product.
- Decomposition Reactions: A single compound breaks down into two or more simpler substances.
- Single Replacement Reactions: An element replaces another element in a compound.
- Double Replacement Reactions: The cations and anions of two different compounds switch places.

Factors Affecting Chemical Reactions
- Temperature: Increasing temperature generally increases the rate of a chemical reaction.
- Concentration: Higher concentration of reactants usually leads to a faster reaction rate.
- Surface Area: Finely divided substances react more quickly due to increased surface area.
- Catalysts: These substances increase the rate of a reaction without being consumed themselves.

Signs of Chemical Reactions
- Formation of Precipitate: Solid particles forming in a solution.
- Color Change: A change in color indicating a chemical reaction.
- Gas Formation: Bubbles or fizzing indicating a gas is being produced.
- Temperature Change: Heat or cold being released or absorbed during the reaction.
In conclusion, chemical reactions are fundamental processes that involve the transformation of substances into new products through the breaking and forming of chemical bonds. Understanding the types, factors, and signs of chemical reactions is crucial in studying the behavior of matter in the universe.

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