Collision Theory

True or false: A reacxtion can occur without a collision taking place.

• True

• False

Which of the following IS TRUE?

• All collisions are successful.

• Most collisions are successful.

• Almost no collisions are successful.

• No collisions are successful.

Tags

NGSS.HS-PS2-2

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

• True

• False

Why does a higher concentration increase the rate of reaction?

• it increases the amount of reactants

• it lowers the activation energy

• it increases the energy of particle collisions

• it increases the frequency of particle collisions

Tags

NGSS.HS-PS1-5

What makes an effective collision?

• When molecules collide.

• When molecules collide with the proper orientation.

• When molecules collide with proper orientation and enough kinetic energy.

• High Temperature.

As the frequency of ______________ increases, the rate of reaction increases.

• Time

• Reactions

• Collisions

• Reactants

Tags

NGSS.HS-PS1-5

How can you increase the rate of a reaction

• Decrease the pressure

• Increase the rate of collisions

• Decrease the concentration

• Increase the concentration

Tags

NGSS.HS-PS1-5

Why don't all collisions between particles cause a reaction?

• the particles also need to collide with a catalyst

• not all the particles collide with enough energy

• not all the particles collide at a high enough temperature

• the particles need to collide with each other twice

Tags

NGSS.HS-PS1-5

Objects hitting each other

• Collision

• Catalyst

• Explosion

• Reaction

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

Which of the following increase the reaction rate?

• less surface area

• lower temperature

• increased concentration

Tags

NGSS.HS-PS1-5