Concept explainers
When an iron object rusts, its mass increases. When a match burns, its mass decreases. Do these observations violate the law of conservation of mass? Explain.
Interpretation:
Whether the given observations violate the law of conservation of mass or not should be identified with explanation.
Concept introduction:
Law of conservation of mass: This law states that during a reaction process or in a chemical reaction, there is no change in the mass of reactants or mass of reactant is equal to the mass of product.
Answer to Problem 1E
No, given observations doesn’t violate the Law of Conservation of Mass.
Explanation of Solution
Given information:
When an iron object rusts, its mass increases.
When a match burns, its mass decreases.
According to law of conservation of mass, there is no change in the mass in a chemical reaction.
The given statement tells that when an iron object rusts, its mass increases.
When an iron object rusts, the change in state of iron occurs as iron reacts with oxygen and result in the formation of iron oxide. The addition of oxygen to iron increases the total mass but the mass of iron doesn’t change.
When a match burns, few mass of the compound which is present in the match decreases due to release of carbon dioxide gas during combustion. Also, some volatile gases also release. Thus, match shows a decrease in mass during burning.
Hence, both mentioned observation doesn’t violate the Law of Conservation of Mass.
No, given observations doesn’t violate the Law of Conservation of Mass.
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