Intro to Reaction Rates

As a reaction proceeds, the concentration of reactants will _______ and the concentration of products will ________.

• increase, decrease

• increase, increase

• decrease, decrease

• decrease, increase

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

The collision theory qualitatively explains how chemical reactions occur and why reaction rates differ for different reactions

• True
• False

Collisions may take place between: 

• Atoms
• Ions
• Molecules
• All of the above

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

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