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Questions and Answers
What is the first step to balance the equation Mg + O2 → MgO?
What is the first step to balance the equation Mg + O2 → MgO?
- Change the subscripts of Mg and O
- Add O2 to the product side
- Add a coefficient of 2 to MgO (correct)
- Change the coefficient of Mg to 2
What is a crucial rule to follow when balancing equations?
What is a crucial rule to follow when balancing equations?
- Modify the given reactants and products
- Change only the coefficients of chemical formulas (correct)
- Change the subscripts of chemical formulas
- Add or remove reactants or products
What is the purpose of balancing an equation?
What is the purpose of balancing an equation?
- To make the equation look visually appealing
- To modify the subscripts of chemical formulas
- To ensure the same number of atoms of each element on both sides (correct)
- To change the reactants and products
In the balanced equation CH4 + 2O2 → CO2 + 2H2O, what is the coefficient of O2?
In the balanced equation CH4 + 2O2 → CO2 + 2H2O, what is the coefficient of O2?
In the balanced equation 2H2 + O2 → 2H2O, what is the coefficient of H2?
In the balanced equation 2H2 + O2 → 2H2O, what is the coefficient of H2?
What should not be changed when balancing an equation?
What should not be changed when balancing an equation?
Why is it important to balance an equation?
Why is it important to balance an equation?
What is the result of balancing an equation?
What is the result of balancing an equation?
What does a balanced equation represent in chemistry?
What does a balanced equation represent in chemistry?
What is the term for a representation of a substance using symbols for its constituent elements?
What is the term for a representation of a substance using symbols for its constituent elements?
What is the process of counting atoms on both sides of a chemical equation to ensure they are equal?
What is the process of counting atoms on both sides of a chemical equation to ensure they are equal?
What happens when a metal reacts with oxygen or sulfur?
What happens when a metal reacts with oxygen or sulfur?
What is the correct statement about the equation 2H₂ + O₂ → 2H₂O?
What is the correct statement about the equation 2H₂ + O₂ → 2H₂O?
What is the first step in balancing a chemical equation?
What is the first step in balancing a chemical equation?
What is the definition of a balanced equation?
What is the definition of a balanced equation?
What is the primary reason for balancing chemical equations?
What is the primary reason for balancing chemical equations?
What is the term for the dulling or discoloration of metal due to a chemical reaction?
What is the term for the dulling or discoloration of metal due to a chemical reaction?
In the balanced equation 2H₂ + O₂ → 2H₂O, what is the number of oxygen atoms on the left side of the equation?
In the balanced equation 2H₂ + O₂ → 2H₂O, what is the number of oxygen atoms on the left side of the equation?
What is the result of balancing the equation Mg + O₂ → MgO?
What is the result of balancing the equation Mg + O₂ → MgO?
What is the term for iron oxide, formed by the reaction of iron and oxygen?
What is the term for iron oxide, formed by the reaction of iron and oxygen?
What is the first step in balancing the equation Mg + O₂ → MgO?
What is the first step in balancing the equation Mg + O₂ → MgO?
What is a characteristic of a balanced equation?
What is a characteristic of a balanced equation?
When balancing an equation, what is the primary goal?
When balancing an equation, what is the primary goal?
In the combustion of methane, what is the coefficient of O2 in the balanced equation?
In the combustion of methane, what is the coefficient of O2 in the balanced equation?
What is the result of balancing the equation H2 + O2 → H2O?
What is the result of balancing the equation H2 + O2 → H2O?
What should be modified to balance an equation?
What should be modified to balance an equation?
In the equation 2Mg + O2 → 2MgO, what is the coefficient of Mg?
In the equation 2Mg + O2 → 2MgO, what is the coefficient of Mg?
What is the purpose of using coefficients in balancing an equation?
What is the purpose of using coefficients in balancing an equation?
What is the correct sequence of steps to balance an equation?
What is the correct sequence of steps to balance an equation?
What is the significance of a balanced equation in chemistry?
What is the significance of a balanced equation in chemistry?
Which of the following is a necessary condition for a chemical equation to be balanced?
Which of the following is a necessary condition for a chemical equation to be balanced?
What is the primary reason for ensuring that a chemical equation is balanced?
What is the primary reason for ensuring that a chemical equation is balanced?
In a balanced equation, what is the relationship between the number of atoms of each element on the reactant and product sides?
In a balanced equation, what is the relationship between the number of atoms of each element on the reactant and product sides?
What is the purpose of counting the atoms of each element on both sides of a chemical equation?
What is the purpose of counting the atoms of each element on both sides of a chemical equation?
Which of the following statements is true about a balanced equation?
Which of the following statements is true about a balanced equation?
What is the result of balancing a chemical equation?
What is the result of balancing a chemical equation?
Which of the following is an example of a chemical reaction that involves the tarnishing of a metal?
Which of the following is an example of a chemical reaction that involves the tarnishing of a metal?
What is the primary reason for modifying the coefficients of reactants or products in a chemical equation?
What is the primary reason for modifying the coefficients of reactants or products in a chemical equation?
Which of the following is a correct statement about balancing a chemical equation?
Which of the following is a correct statement about balancing a chemical equation?
What is a common mistake to avoid when balancing a chemical equation?
What is a common mistake to avoid when balancing a chemical equation?
In the balanced equation CH₄ + 2O₂ → CO₂ + 2H₂O, what is the significance of the coefficient 2 in front of O₂?
In the balanced equation CH₄ + 2O₂ → CO₂ + 2H₂O, what is the significance of the coefficient 2 in front of O₂?
What is the primary goal of balancing a chemical equation?
What is the primary goal of balancing a chemical equation?
In the balanced equation 2H₂ + O₂ → 2H₂O, what is the significance of the coefficient 2 in front of H₂?
In the balanced equation 2H₂ + O₂ → 2H₂O, what is the significance of the coefficient 2 in front of H₂?
What is the result of balancing the equation Mg + O₂ → MgO?
What is the result of balancing the equation Mg + O₂ → MgO?
What is the correct sequence of steps to balance a chemical equation?
What is the correct sequence of steps to balance a chemical equation?
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