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Search Results for reaction - All Grades

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Grade 11 Electrochemistry
What kind of chemical reactions spontaneously takes place in electrochemical cells?
  1. decomposition reaction
  2. redox reaction
  3. synthesis reaction
  4. displacement reaction
Grade 8 Physics
A reaction in which energy is released in the form of heat or light is called                       .
  1. Exothermic reactions
  2. Endothermic reactions
  3. Decomposition reaction
  4. Synthesis reaction
Grade 9 Reactions
Grade 9 Macromolecules
Enzymes affect the reactions in living cells by changing the
  1. pH of the reaction.
  2. speed of the reaction.
  3. products of the reaction.
  4. temperature of the reaction.
Grade 12 Kinetics and Equilibrium
Grade 10 Reactions
The burning of methane is an example of a(n)
  1. catabolic reaction.
  2. biochemical reaction.
  3. anabolic reaction.
  4. exothermic reaction.
Grade 11 Acids and Bases
Which of the following is a type of acid-base reaction?
  1. Neutralization reaction
  2. Synthesis reaction
  3. Decomposition reaction
  4. Redox reaction
Grade 10 Macromolecules
Enzymes affect the reactions in living cells by changing the
  1. products of the reaction.
  2. speed of the reaction.
  3. temperature of the reaction.
  4. pH of the reaction.
Grade 10 Reactions
Reaction of 'magnesium' with air is called what?
  1. Exothermic reaction
  2. Endothermic reaction
  3. Reversible reaction
  4. Substitution reaction
Grade 11 Reactions
Which of the following refers to the type of reaction that occurs when an oxidizing agent is reduced?
  1. redox reaction
  2. neutralization reaction
  3. double replacement reaction
  4. combustion reaction
  5. oxidation half-reaction
Grade 12 Physics
Which type of reaction involves the formation of a single product from two or more reactants?
  1. Decomposition reaction.
  2. Double displacement reaction.
  3. Combination reaction.
  4. Redox reaction.
Grade 8 Physics
Grade 12 Physics
The number of molecules of the reactants involved in a single stage of the reaction indicates                                
  1. the order of the reaction
  2. the speed of the reaction
  3. the half-life of the reaction.
  4. the molecularity of the reaction
Grade 8 Physics
The fusion reaction is a common type of                             .
  1. combustion reactions
  2. decomposition reaction
  3. double displacement reaction
  4. nuclear reaction
Grade 10 Reactions
What type of reaction does the following equation represent?

[math]FeS + 2HCl rarr FeCl_2 + H_2S[/math]
  1. synthesis reaction
  2. double-displacement reaction
  3. single-displacement reaction
  4. decomposition reaction
Continuing Education Biochemical Pathways
Grade 8 Physics
[math]X + Y rarr XY[/math] is what type of reaction?
  1. decomposition reaction
  2. synthesis reaction
  3. single displacement reaction
  4. double displacement reaction
Grade 9 Biochemistry
The graph below shows the reaction rates of two different reactions.

Which of the following statements could explain the difference in the two reactions?

  1. Reaction A is catalyzed by an enzyme.
  2. Reaction B is catalyzed by an enzyme.
  3. Reaction A occurs at a faster rate than Reaction B.
  4. Reaction A and reaction B have the same reaction rate.
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