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 in a closed system, mass is neither created nor destroyed during a chemical reaction; it is conserved.

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Which process is not a chemical reaction?

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Melting of ice is a physical change, not a chemical reaction.

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What happens to matter during a chemical reaction?

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Matter can only be transformed or changed; it cannot be created or destroyed.

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What is a subscript in a chemical formula?

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A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

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What is the sum of the masses of products in a chemical reaction?

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The sum of the masses of the products equals the mass of the reactants.

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What is mass?

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Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms.

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What is a chemical reaction?

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A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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What is a coefficient in a chemical equation?

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A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

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What is the difference between a physical change and a chemical change?

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A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

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What is an example of a chemical reaction?

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Burning of wood is an example of a chemical reaction, where wood reacts with oxygen to produce ash, carbon dioxide, and water.