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Chemical Reactions and Equations Quiz
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Chemical Reactions and Equations Quiz

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@GallantDryad

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Questions and Answers

In a chemical reaction, what does the term 'stoichiometry' refer to?

  • The study of the rate of reaction in a closed system
  • The study of the movement of reactant molecules
  • The study of the physical properties of the reactants
  • The numerical relationship between reactants and products in a chemical reaction (correct)

    • What does the symbol '->' represent in a chemical equation?

  • A reversible reaction
  • An irreversible reaction (correct)
  • A catalyst in the reaction
  • The temperature at which the reaction occurs

    • What happens to the mass during a chemical reaction?

  • Mass fluctuates depending on the type of chemical reaction
  • Mass remains constant as mass is neither created nor destroyed in a chemical reaction (correct)
  • Mass decreases as the reactants are used up
  • Mass increases due to the formation of new substances

    • In a chemical reaction, what is the term for the minimum amount of energy required to start a reaction?

    <p>Activation energy</p> Signup and view all the answers

    What is a catalyst in the context of chemical reactions?

    <p>A substance that speeds up a chemical reaction without being consumed</p> Signup and view all the answers

    What is the term for a chemical reaction in which heat energy is released to the surroundings?

    <p>Exothermic reaction</p> Signup and view all the answers

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