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Geochemical Law

Description: This quiz will test your knowledge of Geochemical Law.
Number of Questions: 5
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Tags: geochemistry earth science
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What is the law of constant proportions?

  1. The law that states that a chemical compound always contains the same elements in the same proportions by mass.

  2. The law that states that the rate of a chemical reaction is proportional to the concentration of the reactants.

  3. The law that states that the equilibrium constant for a chemical reaction is independent of the initial concentrations of the reactants.

  4. The law that states that the heat of a chemical reaction is equal to the difference in the heats of formation of the reactants and products.

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Correct Option: A
Explanation:

The law of constant proportions, also known as the law of definite proportions, states that a chemical compound always contains the same elements in the same proportions by mass. This means that the ratio of the masses of the elements in a compound is always the same, regardless of the amount of compound that is produced.

What is the law of multiple proportions?

  1. The law that states that a chemical compound always contains the same elements in the same proportions by mass.

  2. The law that states that the rate of a chemical reaction is proportional to the concentration of the reactants.

  3. The law that states that the equilibrium constant for a chemical reaction is independent of the initial concentrations of the reactants.

  4. The law that states that the heat of a chemical reaction is equal to the difference in the heats of formation of the reactants and products.

Show answer
Correct Option:
Explanation:

The law of multiple proportions states that when two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in a ratio of small whole numbers. This means that the ratio of the masses of the elements in a compound is not always the same, but it is always a ratio of small whole numbers.

What is the law of conservation of mass?

  1. The law that states that a chemical compound always contains the same elements in the same proportions by mass.

  2. The law that states that the rate of a chemical reaction is proportional to the concentration of the reactants.

  3. The law that states that the equilibrium constant for a chemical reaction is independent of the initial concentrations of the reactants.

  4. The law that states that the heat of a chemical reaction is equal to the difference in the heats of formation of the reactants and products.

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Correct Option:
Explanation:

The law of conservation of mass states that mass cannot be created or destroyed, only transferred or transformed. This means that the total mass of the reactants in a chemical reaction is equal to the total mass of the products.

What is the law of conservation of energy?

  1. The law that states that a chemical compound always contains the same elements in the same proportions by mass.

  2. The law that states that the rate of a chemical reaction is proportional to the concentration of the reactants.

  3. The law that states that the equilibrium constant for a chemical reaction is independent of the initial concentrations of the reactants.

  4. The law that states that the heat of a chemical reaction is equal to the difference in the heats of formation of the reactants and products.

Show answer
Correct Option:
Explanation:

The law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed. This means that the total amount of energy in a closed system remains constant.

What is the law of thermodynamics?

  1. The law that states that a chemical compound always contains the same elements in the same proportions by mass.

  2. The law that states that the rate of a chemical reaction is proportional to the concentration of the reactants.

  3. The law that states that the equilibrium constant for a chemical reaction is independent of the initial concentrations of the reactants.

  4. The law that states that the heat of a chemical reaction is equal to the difference in the heats of formation of the reactants and products.

Show answer
Correct Option:
Explanation:

The law of thermodynamics states that the entropy of a closed system always increases. This means that the disorder of a closed system always increases over time.

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