Constructing an Argument Using Collision Theory and Transition State Theory to Explain Activation Energy in Chemical Rea

Looking at the graph, how would you know which reaction took place with the help of an enzyme?

• The peak for the activation energy is lower.

• The peak for the activation energy is higher.

• There is less energy in the products than the reactants.

• There is no way to really tell which line on the graph shows a reaction that takes place with a reaction.

Enzymes ___________________ activation energy to speed up chemical reactions.

• increase

• decrease

The activation energy needed for a chemical reaction is decreased by a

• catalyst

• reactant

• product

• substrate

What is the relationship between enzymes and activation energy?

• When an enzyme catalyzes a reaction, it increases the activation energy of the reaction

• When an enzyme catalyzes a reaction, it increases the activation energy of the product.

• When an enzyme catalyzes a reaction, it decreases the activation energy of the reaction.

• When an enzyme catalyzes a reaction, it does not affect the activation energy of the

  reaction

Many of the proteins in the human body are enzymes that catalyze chemical reactions. What is the relationship between enzymes and activation energy?

• When an enzyme catalyzes a reaction, it increases the activation energy of the reaction

• When an enzyme catalyzes a reaction, it increases the activation energy of the product.

• When an enzyme catalyzes a reaction, it decreases the activation energy of the reaction.

• When an enzyme catalyzes a reaction, it does not affect the activation energy of the

  reaction

The catalyzed reaction has how many intermediates?

• 0

• 1

• 2

• 3

Using the diagram, which letter should be labeled Activation Energy

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Which letter represents the activation energy for the reverse reaction?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

A possible mechanism for reaction :

A + 2B → C + D

is shown below :

2B → E (slow)

A + E → C + D (fast)

which of the following diagram represents reaction pathway diagram for this reaction mechanism?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Match the following

• Difference between start and end

• Energy lost to the environment

• Difference between beginning and hilltop

• Reaction with Enzyme

• blue dashed line

• Energy saved by using a catalyst

• Difference between blue and green lines

• uncatalyzed reaction

• Green Line

• Activation Energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1