18 Questions
What is the fundamental principle behind balancing a chemical equation?
The law of conservation of mass
What is the purpose of drawing boxes around each formula in a chemical equation?
To balance the chemical equation
What is the term for the process of a metal reacting with oxygen to form a compound?
Corrosion
What is the term for the process of a substance gaining oxygen?
Oxidation
What is the purpose of balancing a chemical equation?
To ensure the number of atoms of each element is equal on both sides
What is a characteristic of a balanced chemical equation?
The number of atoms of each element is the same on both sides
What is the purpose of balancing a chemical equation?
To ensure the number of atoms of each element is equal on both sides
What is the method of balancing chemical equations described in the text?
Hit-and-trial method
What is the purpose of adding symbols of physical states to a chemical equation?
To make the equation more informative
What is the oxidation state of iron in the product Fe3O4?
+3
What is the reaction represented by the equation 3Fe + 4H2O → Fe3O4 + 4H2?
Oxidation reaction
What is the coefficient of Fe in the balanced equation 3Fe + 4H2O → Fe3O4 + 4H2?
3
What is the primary concern when balancing a chemical equation?
Ensuring the number of atoms of each element is equal
Why is it convenient to start balancing with the compound that contains the maximum number of atoms?
To identify the element with the maximum number of atoms
What is the purpose of adding a coefficient '4' to H2O in the partly balanced equation?
To balance the oxygen atoms
How can the number of hydrogen atoms be balanced in the partly balanced equation?
By making the number of molecules of hydrogen as four on the RHS
What is the result of balancing the oxygen atoms in the equation?
Fe + 4H2O → Fe3O4 + H2
What is the purpose of listing the number of atoms of different elements present in the unbalanced equation?
To determine the elements that require balancing
Learn about the concept of balanced chemical equations and how it relates to the law of conservation of mass. Understand the importance of equal masses of elements in reactants and products. Test your knowledge with this quiz!
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