Law of Conservation of mass

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What is the Law of Conservation of Mass?

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The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.

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Balance the equation: 2H2 + O2 -> ?

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2H2 + O2 -> 2H2O

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What is an endothermic reaction?

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An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, causing the temperature to decrease.

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What is an exothermic reaction?

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An exothermic reaction is a chemical reaction that releases heat to its surroundings, causing the temperature to increase.

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What is a chemical reaction?

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A chemical reaction is a process in which substances undergo chemical changes that result in the formation of new substances.

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What are reactants in a chemical reaction?

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Reactants are the starting substances that undergo a chemical change in a reaction.

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What are products in a chemical reaction?

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Products are the substances that are formed as a result of a chemical reaction.

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What is a balanced chemical equation?

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A balanced chemical equation has the same number of atoms of each element on both sides of the equation, reflecting the Law of Conservation of Mass.

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What does it mean to balance a chemical equation?

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Balancing a chemical equation means adjusting the coefficients of the reactants and products to ensure that the number of atoms for each element is the same on both sides.

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What is the significance of the coefficients in a chemical equation?

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Coefficients indicate the number of molecules or moles of each substance involved in the reaction.