A chemical reaction is a process in which one or more substances, known as reactants, are transformed into one or more different substances, known as products. In a chemical reaction, the atoms and molecules of the reactants rearrange themselves to form new substances with different chemical properties.
Key characteristics of chemical reactions include:
Reactants: These are the substances that participate in the chemical reaction and are consumed during the process. They are typically written on the left side of a chemical equation.
Products: These are the substances that are formed as a result of the chemical reaction. They are typically written on the right side of a chemical equation.
Chemical Equations: Chemical reactions are often represented using chemical equations, which provide a concise way to describe the reactants and products and show how atoms are rearranged during the reaction. For example:
2H₂ + O₂ → 2H₂O
In this equation, hydrogen gas (H₂) and oxygen gas (O₂) are the reactants, and water (H₂O) is the product.
Conservation of Mass: According to the law of conservation of mass, the total mass of the reactants is equal to the total mass of the products in a chemical reaction. This means that atoms are not created or destroyed during a chemical reaction, but they are rearranged.
Energy Changes: Chemical reactions may involve the exchange of energy. Some reactions release energy in the form of heat (exothermic reactions), while others absorb energy from their surroundings (endothermic reactions).
Chemical reactions are fundamental to chemistry and play a crucial role in various natural and industrial processes. They are responsible for everything from the digestion of food in our bodies to the production of materials in chemical industries, combustion processes, and much more. Understanding and manipulating chemical reactions is central to the field of chemistry and has numerous practical applications in our daily lives.
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Answer:
A chemical reaction is a process in which one or more substances, known as reactants, are transformed into one or more different substances, known as products. In a chemical reaction, the atoms and molecules of the reactants rearrange themselves to form new substances with different chemical properties.
Key characteristics of chemical reactions include:
Reactants: These are the substances that participate in the chemical reaction and are consumed during the process. They are typically written on the left side of a chemical equation.
Products: These are the substances that are formed as a result of the chemical reaction. They are typically written on the right side of a chemical equation.
Chemical Equations: Chemical reactions are often represented using chemical equations, which provide a concise way to describe the reactants and products and show how atoms are rearranged during the reaction. For example:
2H₂ + O₂ → 2H₂O
In this equation, hydrogen gas (H₂) and oxygen gas (O₂) are the reactants, and water (H₂O) is the product.
Conservation of Mass: According to the law of conservation of mass, the total mass of the reactants is equal to the total mass of the products in a chemical reaction. This means that atoms are not created or destroyed during a chemical reaction, but they are rearranged.
Energy Changes: Chemical reactions may involve the exchange of energy. Some reactions release energy in the form of heat (exothermic reactions), while others absorb energy from their surroundings (endothermic reactions).
Chemical reactions are fundamental to chemistry and play a crucial role in various natural and industrial processes. They are responsible for everything from the digestion of food in our bodies to the production of materials in chemical industries, combustion processes, and much more. Understanding and manipulating chemical reactions is central to the field of chemistry and has numerous practical applications in our daily lives.
Explanation:
Answer:
a chemical change that occurs when two or more substances combine to form a new substance.
Explanation:
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