18 Questions
What is the primary principle that a balanced chemical equation must obey?
Law of conservation of mass
What is the purpose of balancing a chemical equation?
To ensure the number of atoms of each element is the same on both sides
What is the process of representing a chemical reaction using chemical formulas?
Chemical equation representation
What is the term for the study of the quantitative relationships between reactants and products in chemical reactions?
Stoichiometry
What is the correct step in balancing a chemical equation?
Draw boxes around each formula
What is a skeletal chemical equation?
A chemical equation with formulas of reactants and products
What is the number of atoms of hydrogen in the reactants in the initial equation?
8
What is the coefficient of Fe in the balanced equation?
3
What is the name of the method used to balance the chemical equation in this example?
Hit-and-trial method
What is the purpose of writing symbols of physical states in a chemical equation?
To make the equation more informative
What is the number of atoms of iron in the reactants in the balanced equation?
3
What is the final step in balancing a chemical equation using the hit-and-trial method?
Counting the atoms of each element on both sides of the equation
What is the purpose of including the notation (aq) in a chemical equation?
To specify that the reactant or product is present as a solution in water
What is the significance of including the physical state of reactants and products in a chemical equation?
It is necessary to specify them only when it is required to understand the reaction
What do the symbols above and/or below the arrow in a chemical equation represent?
The reaction conditions such as temperature, pressure, and catalyst
What is the purpose of balancing a chemical equation?
To ensure that the number of atoms of each element is the same on both the reactant and product sides
What is the significance of the symbol (g) in the equation 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)?
It indicates that water is used in the form of steam
Why is it necessary to clean a magnesium ribbon before burning it in air?
To remove any impurities that may affect the reaction
Learn about the law of conservation of mass and how to write balanced chemical equations with examples of reaction equations, such as the burning of magnesium in air.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
