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Endothermic and exothermic reaction

Quiz by Jake Piner Villagonzalo

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19 questions
Show answers
  • Q1
    In an endothermic reaction, the energy level of the products is __________ the energy level of the reactants.
    unrelated to
    equal to
    higher
    lower
    30s
  • Q2
    In an exothermic reaction, the energy level of the products is __________ the energy level of the reactants.
    higher
    equal to
    unrelated to
    lower
    30s
  • Q3
    Which type of reaction releases heat to the surroundings?
    neutral
    exothermic
    hyperthermic
    endothermic
    30s
  • Q4
    In which type of reaction is energy absorbed from the surroundings?
    neutral
    exothermic
    thermic
    endothermic
    30s
  • Q5
    Which type of reaction requires an input of energy to proceed?
    endothermic
    spontaneous
    neutral
    exothermic
    30s
  • Q6
    What happens to the energy level of the reactants in an exothermic reaction?
    the energy level of the reactants stays the same
    the energy level of the reactants decreases
    the energy level of the reactants becomes unpredictable
    the energy level of the reactants increases
    30s
  • Q7
    What is the overall effect on the surroundings in an exothermic reaction?
    warmed up
    remained unchanged
    cooled down
    frozen
    30s
  • Q8
    Which type of reaction is characterized by a decrease in enthalpy?
    neutral
    exothermic
    endothermic
    spontaneous
    30s
  • Q9
    What is the typical sign of ∆H (change in enthalpy) for an exothermic reaction?
    undefined
    negative
    positive
    zero
    30s
  • Q10
    Which type of reaction absorbs heat from the surroundings?
    neutral
    endothermic
    exothermic
    spontaneous
    30s
  • Q11
    What is the term for the minimum amount of energy required to start a chemical reaction?
    heat of reaction
    activation energy
    energy barrier
    thermal equilibrium
    30s
  • Q12
    Which type of reaction is characterized by a decrease in energy level from reactants to products?
    exothermic
    spontaneous
    endothermic
    neutral
    30s
  • Q13
    What happens to the temperature of the surroundings in an exothermic reaction?
    It remains constant
    It fluctuates
    It increases
    It decreases
    30s
  • Q14
    Which type of reaction requires an input of energy to proceed?
    spontaneous
    neutral
    endothermic
    exothermic
    30s
  • Q15
    What is the main difference between endothermic and exothermic reactions in terms of energy?
    Endothermic reactions absorb energy, while exothermic reactions release energy.
    Endothermic reactions and exothermic reactions both absorb energy.
    Endothermic reactions release energy, while exothermic reactions absorb energy.
    Endothermic reactions and exothermic reactions both release energy.
    30s

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