3/4 Quiz

Which of the following increase the reaction rate?

• less surface area

• lower temperature

• increasing pressure

• increased concentration

A catalyst works by

• changing the order of the reaction
• increasing the temperature
• lowering the activation energy
• making the activated complex

If the temperature is reduced, a reaction rate will ______

• increase

• decrease

• stay the same

If the concentration of a reactant is increased, the reaction rate will ___________.

• increase

• decrease

• stay the same

The ____________ states that atoms, ions, or molecules must collide in order to react.

• transition state

• activation energy

• rate law

• collision theory

The rate of a reaction increases as temperature__________________.

• Decreases
• Increases
• Stays the Same

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst
• product
• reactant
• solute

Products will form faster if____________

• the particle size of the reactants are larger.
• temperature is decreased.
• concentration of the reactants are increased.
• the reaction is not stirred.

The ___________ the surface area of the reactants, the faster the reaction rate.

• larger 
• smaller

Which factor can only affects the rate of reaction when involved gases as the reactant?

• Concentration of reactants

• Pressure

• Temperature

• Size of reactants