18 Questions
Reactants are substances that undergo a chemical change in a ______
reaction
Reactants provide raw materials for the formation of new ______
compounds
When writing a balanced chemical equation, it is essential to balance the number of each type of atom on both sides of the ______
equation
Products are the new compounds formed after a chemical reaction has ______
occurred
Like reactants, products must also be balanced in a balanced chemical ______
equation
Ensure that the coefficients are adjusted so that the same elements appear ______
equally
To balance a chemical equation, we must ensure that each element has an equal number of atoms on both sides of the ______
equation
In the unbalanced chemical equation C(s) + O₂(g) → CO₂(g), there is an imbalance in ______ atoms
oxygen
Each carbon atom requires ______ electrons for stability
eight
In the given example, we have carbon dioxide (CO₂) on the ______ side
products
If each carbon atom requires eight electrons for stability, we need to add ______ more oxygen atoms
four
Balancing chemical equations helps to maintain ______ economy
atom
Balancing oxidation states is essential for maintaining consistency within the ______
reaction
In a redox reaction, silver nitrate (AgNO₃) is ______ by chloride ions (Cl⁻)
reduced
Silver loses one electron to form Ag²⁺, resulting in an increase in ______ state
oxidation
Balancing chemical equations ensures a constant relationship between the quantities of ______ and products
reactants
Balancing equations is crucial for calculating the ______ of a reaction
stoichiometry
By balancing chemical equations, we can accurately calculate the stoichiometric ratio of ______ to products
reactants
Study Notes
Balancing Chemical Reactions
Chemical reactions involve rearrangement of atoms from one or more reactant molecules to form product molecules. A balanced chemical equation shows how many moles of each substance participate in the reaction. In this guide, we will discuss balancing chemical equations by focusing on reactants and products.
Reactants
Reactants are substances that undergo a chemical change in a reaction. They provide raw materials for the formation of new compounds. When writing a balanced chemical equation, it is essential to balance the number of each type of atom on both sides of the equation. This means equalizing the total number of each element's atoms on both sides of the equation. For example, if you have a chemical equation with hydrogen and chlorine, make sure there are the same number of each in the reactants and products:
H2 + Cl2 → HCl
This equation is already balanced because there are two hydrogen atoms on the left and two on the right, and two chlorine atoms on the left and two on the right.
Products
Products are the new compounds formed after a chemical reaction has occurred. Like reactants, they must also be balanced in a balanced chemical equation. To do this, ensure that the coefficients (the numbers before the formula) are adjusted so that the same elements appear equally.
For example, consider the following unbalanced chemical equation:
Cu(NO_3)_2 + Mn → Cu + NO
To balance this equation, adjust the coefficients:
Cu(NO_3)_2 + 2Mn → Cu + 2NO
Importance of Balancing Equations
Balancing chemical reactions ensures that the number of atoms of each element is conserved, demonstrating the law of conservation of mass. Additionally, it helps chemists understand what happens during a reaction and predict the mass of products accurately.
Learn the importance of balancing chemical equations by focusing on reactants and products. Discover how to balance equations to ensure conservation of mass and accurately predict product masses.
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