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

• True
• False

Tags

NGSS.HS-PS1-5

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

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-PS1-4

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

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

Tags

NGSS.HS-PS1-3

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