Chemical Reactions and Equations
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Questions and Answers

What is the purpose of writing the notation (aq) in a chemical equation?

  • To indicate the temperature at which the reaction takes place
  • To indicate the physical state of the reactant or product
  • To indicate that the reactant or product is present as a solution in water (correct)
  • To indicate the presence of a catalyst in the reaction

    • Why are physical states not usually included in a chemical equation?

  • Because they are already implied by the reaction
  • Because they are difficult to determine
  • Because they are not important in the reaction
  • Because they are not necessary to specify the reaction (correct)

    • What is the symbol used to indicate that water is used in the form of steam in a chemical reaction?

  • (l)
  • (g) (correct)
  • (aq)
  • (s)

    • What is the purpose of including reaction conditions in a chemical equation?

    <p>To specify the temperature and pressure at which the reaction takes place</p> Signup and view all the answers

    What is the purpose of balancing a chemical equation?

    <p>To ensure that the number of atoms of each element is the same on both the reactant and product sides</p> Signup and view all the answers

    What is the notation used to indicate that a reactant or product is present in its solid state?

    <p>(s)</p> Signup and view all the answers

    What is the purpose of including state symbols in a chemical equation?

    <p>To specify the physical state of the reactants and products</p> Signup and view all the answers

    Why is it necessary to specify the physical state of water in a chemical equation?

    <p>Because it can be present in different physical states</p> Signup and view all the answers

    What is the notation used to indicate that a reactant or product is present in its gaseous state?

    <p>(g)</p> Signup and view all the answers

    Why is it important to balance a chemical equation?

    <p>Because it ensures that the number of atoms of each element is the same on both the reactant and product sides</p> Signup and view all the answers

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