Chemistry Chapter 1 Quiz
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Questions and Answers

What is the law of conservation of mass in chemical reactions?

  • Mass remains constant; it cannot be created or destroyed. (correct)
  • Products have a mass that cannot be measured.
  • Mass can be created or destroyed.
  • The mass of reactants is always greater than the mass of products.

    • In the equation Na + Cl = NaCl, what are Na and Cl known as?

  • Reagents
  • Products
  • Catalysts
  • Reactants (correct)

    • What does Lavoisier's work primarily demonstrate?

  • Mass is conserved in chemical reactions. (correct)
  • Mass can vary in chemical reactions.
  • Elements cannot combine to form compounds.
  • The mass of reactants does not equal the mass of products.

    • How are chemical reactions represented?

    <p>By chemical equations using chemical symbols. (D)</p> Signup and view all the answers

    Which of the following is an example of a chemical equation?

    <p>Fe + O2 = Fe2O3 (B)</p> Signup and view all the answers

    Flashcards

    Law of Conservation of Mass

    Mass is neither created nor destroyed during chemical reactions.

    Chemical Equation

    A way to show reactants and products in a reaction.

    Reactants

    Substances that react to form products in a chemical reaction.

    Products

    Substances that are formed as a result of a chemical reaction.

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    Chemical Reaction

    A process where substances change into new substances.

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