2ndhr W2 (Maxwell Boltzman& Factors Affecting Reaction Rate)

The rate of a reaction increases as temperature__________________.

• Decreases

• Increases

• Stays the Same

Products will form faster if____________

• the particle size of the reactants are larger.
• temperature is decreased.
• concentration of the reactants are increased.
• the reaction is not stirred.

Tags

NGSS.HS-PS1-5

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst
• product
• reactant
• solute

Tags

NGSS.HS-PS1-5

Catalysts permit reactions to proceed along a ___________energy path.

• lower
• higher

Tags

NGSS.HS-PS1-4

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

• larger
• smaller

The graph below shows a typical energy distribution for particles of an ideal gas in a sealed container at a fixed temperature.

Which of the following statements is true?

• Position A represents the mean energy of a molecule in the container.

• Addition of a catalyst moves the position of E_A to the right.

• The area under the curve to the right of E_A represents the number of molecules with enough energy to react.

• The position of the peak of the curve at a higher temperature is further away from both axes.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4