Chemical Reactions and Equations Quiz
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Questions and Answers

What is the difference between a chemical reaction and a chemical equation?

  • A chemical reaction occurs in a laboratory setting, while a chemical equation occurs in nature.
  • A chemical reaction is only applicable to organic compounds, while a chemical equation applies to inorganic compounds.
  • A chemical reaction is the process of chemical transformation, while a chemical equation represents the reaction using symbols and formulas. (correct)
  • A chemical reaction is reversible, while a chemical equation is irreversible.

    • What does the Law of Conservation of Mass state in relation to chemical reactions?

  • The mass of substances in a chemical reaction can be created or destroyed.
  • The mass of reactants decreases in a chemical reaction.
  • The mass of products is always greater than the mass of reactants in a chemical reaction.
  • The total mass of substances does not change during a chemical reaction. (correct)

    • What is the purpose of balancing a chemical equation?

  • To ensure that the same number of each type of atom is present on both sides of the equation. (correct)
  • To make the equation easier to understand for non-scientists.
  • To change the chemical properties of the substances involved in the reaction.
  • To increase the speed of the chemical reaction.

    • What is the general form of a chemical equation?

    <p>Reactants → Products</p> Signup and view all the answers

    What does the coefficient in a chemical equation represent?

    <p>Number of atoms or molecules</p> Signup and view all the answers

    In a chemical reaction, what does it mean if a substance is oxidized?

    <p>It loses electrons</p> Signup and view all the answers

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