Chemical Reactions and Equations Quiz
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Questions and Answers

What is a chemical reaction?

  • A process leading to the transformation of chemical substances (correct)
  • A process involving changes to the nuclei of elements
  • A process without any change in the positions of electrons
  • A process involving only electronic changes in atoms

    • What do chemical reactions usually yield?

  • The same substances as the reactants
  • One or more products with properties different from the reactants (correct)
  • Unstable and radioactive elements
  • Only one product with similar properties to the reactants

    • What are the substances initially involved in a chemical reaction called?

  • Catalysts
  • Reactants or reagents (correct)
  • Products
  • Intermediates

    • What is nuclear chemistry primarily concerned with?

    <p>Chemical reactions of unstable and radioactive elements</p> Signup and view all the answers

    What do reactions often consist of?

    <p>A sequence of individual sub-steps, the so-called elementary reactions</p> Signup and view all the answers

    What is chemical decomposition usually regarded as?

    <p>The exact opposite of chemical synthesis</p> Signup and view all the answers

    What generally accelerates decomposition?

    <p>Higher temperatures</p> Signup and view all the answers

    What can the net reaction of a decomposition process be?

    <p>An endothermic process</p> Signup and view all the answers

    What limits the stability of a chemical compound when exposed to extreme environmental conditions?

    <p>Heat, radiation, humidity, or the acidity of a solvent</p> Signup and view all the answers

    Why is chemical decomposition often an undesired chemical process?

    <p>Because the stability of a chemical compound is limited when exposed to extreme environmental conditions</p> Signup and view all the answers

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