Catalysts
Interactive Video
•
Science
•
12th Grade
•
Hard
Wayground Resource Sheets
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement accurately describes a catalyst's role in a chemical reaction?
It is completely used up during the reaction.
It is partially converted into a product.
It is regenerated and not consumed in the overall reaction.
It forms a permanent bond with the reactants.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary way catalysts speed up chemical reactions?
By increasing the concentration of reactants.
By raising the overall energy of the system.
By lowering the activation energy required for the reaction.
By changing the chemical composition of the products.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the enzyme catalase accelerate the decomposition of hydrogen peroxide?
It increases the kinetic energy of the hydrogen peroxide molecules.
It forms a stable complex with the products, preventing reverse reactions.
It stabilizes the transition state of the reaction, making it easier to break bonds.
It directly provides energy to break the bonds in hydrogen peroxide.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the elephant toothpaste demonstration, how does potassium iodide (KI) act as a catalyst to decompose hydrogen peroxide?
It directly combines with hydrogen peroxide to form water and oxygen.
It introduces new intermediate steps, creating an alternative reaction pathway.
It increases the overall energy released by the reaction.
It physically separates the hydrogen peroxide molecules, making them easier to break.
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