Multiple Choice
Which of the following associations between elements and their chemical properties is incorrect?
1. Intro to General Chemistry
Chemical Properties
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Which of the following statements is not true according to the Law of Conservation of Mass?
A
Mass can be created or destroyed in a chemical reaction.
B
In a closed system, the mass before and after a reaction is the same.
C
The total mass remains constant during a chemical reaction.
D
The mass of reactants equals the mass of products in a chemical reaction.
Verified step by step guidance1
Understand the Law of Conservation of Mass: This law states that mass is neither created nor destroyed in a chemical reaction. It implies that the total mass of reactants equals the total mass of products in a closed system.
Analyze each statement: Begin by examining each statement provided in the problem to determine its alignment with the Law of Conservation of Mass.
Evaluate the first statement: 'Mass can be created or destroyed in a chemical reaction.' This statement contradicts the Law of Conservation of Mass, as the law explicitly states that mass cannot be created or destroyed.
Evaluate the second statement: 'In a closed system, the mass before and after a reaction is the same.' This statement aligns with the Law of Conservation of Mass, as it reflects the principle that mass remains constant in a closed system.
Evaluate the third and fourth statements: 'The total mass remains constant during a chemical reaction.' and 'The mass of reactants equals the mass of products in a chemical reaction.' Both statements are consistent with the Law of Conservation of Mass, as they reiterate the concept that mass is conserved during a chemical reaction.
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