Chemical Changes vs Physical Changes Quiz
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Chemical Changes vs Physical Changes Quiz

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@ExceedingRadiance

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Questions and Answers

What is the purpose of chemical equations in representing chemical reactions?

  • To provide a detailed explanation of the reaction mechanism
  • To show the stoichiometry of the reaction (correct)
  • To illustrate the temperature changes during the reaction
  • To represent the isotopes involved in the reaction

    • Who is credited with formulating chemical equations first?

  • Antoine Lavoisier
  • Marie Curie
  • Jean Beguin (correct)
  • Dmitri Mendeleev

    • What do we call the initial substances in a chemical reaction?

  • Reactants (correct)
  • Intermediates
  • Products
  • Catalysts

    • What symbol is used in chemical equations to represent a state of chemical equilibrium?

    <p>&lt;=&gt;</p> Signup and view all the answers

    In a chemical equation, what does the symbol '→' indicate?

    <p>The net forward reaction</p> Signup and view all the answers

    What is a concise way of representing a chemical reaction?

    <p><strong>Chemical equation</strong></p> Signup and view all the answers

    Which term refers to the final substances formed in a chemical reaction?

    <p><strong>Products</strong></p> Signup and view all the answers

    What can separate the reactants and products in a chemical equation?

    <p><strong>=</strong></p> Signup and view all the answers

    '2H2+O2→2H2O' represents a chemical reaction. What does '2H2' signify in this equation?

    <p><strong>2 molecules of hydrogen gas</strong></p> Signup and view all the answers

    '2Na(s) + Cl2 → 2NaCl(s)' is an example of which type of reaction?

    <p><strong>Synthesis</strong></p> Signup and view all the answers

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