Collision Theory and Reaction Rates

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

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

Increasing the temperature of your solution will.......

• Not affect the rate of reaction.

• Speed up the rate of reaction

• Slow down the rate of reaction

Tags

NGSS.HS-PS1-5

Which has more surface area?

• Large chunks of chalk

• Cube of sugar

• Powdered sugar

• Small chunks of sugar

If you shrink the container size that your gas substance is in what will happen?

• The reaction rate will stay the same

• The reaction rate will speed up

• The reaction rate will slow down

Tags

NGSS.HS-PS1-5

More collisions correspond to a: 

• Faster reaction rate  
• Slower reaction rate
• Constant reaction rate 
• None of the above

Tags

NGSS.HS-PS1-5

What criteria must be met for reactant collisions to result in a successful product?

• The reactants must collide with each other

• The reactants must collide with enough energy and be in the right positions

• The reactants must have enough energy to form the activated complex

Tags

NGSS.HS-PS1-5

When the temperature of a reacting mixture increases, the rate of reaction increases.

Which statement explains why the rate of reaction increases?

• The total surface area of the reactant particles increases

• The total number of the reactant particles per unit volume increases

• The reactant particles move faster and collide more often with one another

• The reactant particles which collide more often are able to overcome the lower activation energy

Tags

NGSS.HS-PS1-5

Which does not increase the speed of a reaction?

• adding a catalyst

• increasing the concentration of one of the reactants

• increasing the particle size of one of the reactants

• increasing the temperature

Tags

NGSS.HS-PS1-5