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Rates of chemical reactions

Quiz by Grant

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17 questions
Show answers
  • Q1
    Which of the following factors can increase the rate of a chemical reaction?
    Decreasing temperature
    Presence of a catalyst
    Increasing size of reactants
    Decreasing concentration of reactants
    30s
  • Q2
    What is the term for the minimum energy required for a reaction to occur?
    Chemical energy
    Thermal energy
    Activation energy
    Collision energy
    30s
  • Q3
    Which of the following statements is true about exothermic reactions?
    They release energy
    They always occur quickly
    They absorb energy
    They have a high activation energy
    30s
  • Q4
    Which factor affects the rate of a gas-phase chemical reaction?
    Electrical conductivity
    Magnetic properties
    Color of the reactants
    Pressure
    30s
  • Q5
    Which of the following is NOT a way to measure the rate of a chemical reaction?
    Change in temperature
    Change in pH
    Density of the products
    Amount of product formed over time
    30s
  • Q6
    In a chemical reaction, what is the term for the substances that are formed?
    Catalysts
    Intermediates
    Products
    Reactants
    30s
  • Q7
    Which of the following factors can decrease the rate of a chemical reaction?
    Presence of a catalyst
    Increasing temperature
    Increasing concentration of reactants
    Increasing the size of reactants
    30s
  • Q8
    Which of the following statements is true about enzymes?
    They slow down chemical reactions
    They are biological catalysts
    They increase activation energy
    They only work in low temperatures
    30s
  • Q9
    What is the term for the rate of disappearance of reactants or appearance of products in a chemical reaction?
    Reaction rate
    Activation energy
    Standard deviation
    Equilibrium constant
    30s
  • Q10
    Which factor affects the rate of a chemical reaction?
    Density of the reaction mixture
    Length of the reaction
    Color of the reactants
    Concentration of reactants
    30s
  • Q11
    Which factor influences the rate of a chemical reaction?
    Smell of reactants
    Taste of reactants
    Sound of the reaction
    Surface area of reactants
    30s
  • Q12
    What factor affects the rate of a chemical reaction?
    Humidity of the reaction chamber
    Viscosity of the reactants
    Catalysts
    Relative humidity of the air
    30s
  • Q13
    Which factor is known to affect the rate of a chemical reaction?
    Position of reactants
    Luminosity of the mixture
    Age of the reactants
    Temperature of the reactants
    30s
  • Q14
    What factor can influence the rate of a chemical reaction?
    Density
    Boiling point
    Melting point
    Pressure
    30s
  • Q15
    What can affect the rate of a chemical reaction?
    Color of the reagents
    Presence of a catalyst
    Shape of the reaction vessel
    Age of the reactants
    30s

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