Use Simple Collision Theory to Explain the Effects of Concentration, Temperature, and Particle Size on the Rate of React

If the reactant particles collide with less than the activation energy, the particles will be rebound, and no reaction will occur.

• True
• False

What two factors govern whether a collision between reacting particles will be effective?

• orientation and potential energy 
• kinetic energy and temperature 
• kinetic energy and orientation 
• potential energy and kinetic energy 

Under the collision theory, the particles must collide with  ____ and ____ for a reaction to occur.

• sufficient rate and sufficient energy
• sufficient surface area and correct orientation
• sufficient catalyst and sufficient energy
• sufficent energy and correct orientation

What are the temporary combinations of reactant particles at the peak of the energy barrier called?

• intermediates
• products
• activated complexes
• inhibitors

Tags

NGSS.HS-PS1-4

The energy needed by reactants for an effective collision is called the 

• activation energy
• change in entropy
• change in enthalpy
• free energy

Tags

NGSS.HS-PS1-5

What theory states that reactant particles must collide with each other for a reaction to occur?

• entropy theory
• chaos theory
• collision theory
• theory of maxumum disorder

Tags

NGSS.HS-PS1-5

What factors are required for successful collisions?

• collision of particles
• sufficient energy
• favorable orientation
• all of these

Collision theory states that

• particles collide at random and react
• collisions between particles often result in a reaction
• collision between molecules are sometimes needed before a reaction occurs
• reacting particles must collide with enough energy in order to react

Tags

NGSS.HS-PS1-5

if two reactants collided with energy but no reaction occurred, what would the most like explanation be?

• the collision was too soft
• the colliding particles were in the incorrect orientation
• the colliding particles were in the correct orientation
• the colliding particles were too big

What can happen once the activated complex is formed

• old bonds broken and new bonds formed
• new bonds broken and old bonds formed
• no change in bonds
• they stay as the activated complex

Tags

NGSS.HS-PS1-7