Reaction Rates

Which factors increase the rate of a reaction.

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

Increase in temperature of the reactants can do one of the following

• Slow collision frequency
• Allow less effective collision between the particles
• Neutralise the reaction
• increase collision between the particles thus increasing the rate.

Which of the following increase the reaction rate?

• less surface area
• lower temperature
• an inhibitor
• increased concentration

How could we make this reaction happen more quickly?

• Decrease the concentration of the acid

• crush the chalk to increase the surface area

• Put the test tube in an ice bath

The major theory of reaction rate is called

• Collision theory

• Crash theory

• Newton's laws

• Thermodynamics

A temperature increase causes the particles ......

• to slow down

• move faster

• collide higher

• in the right order

What is the rate of reaction?

• How fast a reaction is 
• How big a reaction is
• How loud a reaction is
• How much gas a reaction produces

Located on the left side of the reaction

• reactants
• products

Grinding a seltzer tablet into powder increases the rate of reaction due to increased

• concentration
• surface area
• temperature
• reactants

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

• larger
• smaller