Balancing Chemical Equations
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Questions and Answers

What does a balanced chemical equation ensure?

  • Less reactants than products
  • More reactants than products
  • Equal amount of each element on both sides (correct)
  • Different amount of each element on both sides
  • Why is balancing a chemical equation important?

  • To increase the number of molecules in a reaction
  • To create new elements
  • To remove the need for coefficients
  • To ensure compliance with the law of conservation of matter (correct)
  • What does the coefficient in a chemical equation indicate?

  • Atomic number of the element
  • State of matter of the element
  • Color of the compound
  • Number of moles of the chemical used (correct)
  • What is the law of conservation of matter?

    <p>Matter can not be created or destroyed in a reaction</p> Signup and view all the answers

    What is the primary purpose of using coefficients in a chemical equation?

    <p>To balance the equation</p> Signup and view all the answers

    How can the hydrogen atoms be balanced in a chemical equation?

    <p>Putting the coefficient in front of the sodium hydroxide</p> Signup and view all the answers

    In balancing the potassium atoms, which compound needed a coefficient added?

    <p>Carbon dioxide</p> Signup and view all the answers

    Why does the text suggest putting the coefficient 2 in front of potassium?

    <p>To balance the carbon atoms</p> Signup and view all the answers

    Which element needed a final check to ensure it was balanced in the chemical equations described?

    <p>Sodium</p> Signup and view all the answers

    What is the purpose of counting each molecule again at the end of balancing a chemical equation?

    <p>To make sure each atom is balanced</p> Signup and view all the answers

    How many molecules of oxygen are needed for every molecule of glucose in a balanced chemical equation?

    <p>6</p> Signup and view all the answers

    In balancing chemical equations, what is typically the last step to ensure the equation is balanced?

    <p>Checking the number of atoms on each side</p> Signup and view all the answers

    What is the purpose of changing coefficient numbers in balancing a chemical equation?

    <p>To ensure the atoms are balanced</p> Signup and view all the answers

    Why is it impossible to increase the number of hydrogen atoms on the reactant side by only 1 atom when balancing a chemical equation?

    <p>Hydrogen exists in diatomic molecules</p> Signup and view all the answers

    In balancing a chemical equation, what should not be changed to adjust the balance?

    <p>Subscript numbers</p> Signup and view all the answers

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