Reaction Rate - Quiz Quiz

Question 1

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown. MgO times s plus 601 point 7 kJ rightarrow Mg times s plus 1 half cap o sub 2 g Which factor plays the most important role in allowing this reaction to occur?

Revolt · Accepted Answer

B: temperature

Question 2

Which term refers to the speed at which reactants are converted into products?

Revolt · Accepted Answer

B: reaction rate

Question 3

Consider the reaction. 2 NH sub 3 times g long left right arrow cap n sub 2 times g plus 3 cap h sub 2 times g Which is most likely the effect to the forward reaction if there is an increase in pressure of the system?

Revolt · Accepted Answer

B: The reaction rate decreases.

Question 4

Which applies to the collision theory?

Revolt · Accepted Answer

C: Particles need to collide in order to react.

Question 5

A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?

Revolt · Accepted Answer

B: Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Question 6

The production of water proceeds according equation. 2 cap h sub 2 g plus cap o sub 2 times g rightarrow 2 cap h sub 2 cap o g Which describes a way to speed up the collisions between hydrogen and oxygen molecules to produce more water?

Revolt · Accepted Answer

B: Place the reactants in a smaller container.; C: Use a less-intense source of heat on the reactants.

Question 7

Which will cause an increase in the reaction rate between molecules?

Revolt · Accepted Answer

C: Molecules collide more frequently.

Question 8

Which topic is commonly used to explain activation energy and how chemical reactions happen?

Revolt · Accepted Answer

C: collision theory

Question 9

An increase in temperature affects the reaction rate by

Revolt · Accepted Answer

C: increasing the number of molecules that have sufficient kinetic energy to react.

Question 10

Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben’s observation?

Revolt · Accepted Answer

A: reaction rate

Reaction Rate - Quiz Quiz Answers

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