Factors affecting the rate of chemical reaction

The rate of a reaction increases as temperature__________________.

• Decreases
• Increases
• Stays the Same

Tags

NGSS.HS-PS1-5

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.

Tags

NGSS.HS-PS1-5

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

• catalyst
• product
• reactant
• solute

Tags

NGSS.HS-PS1-5

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

• larger
• smaller

Tags

NGSS.MS-PS1-2

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

• larger 
• smaller

Tags

NGSS.HS-PS1-5

Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.

• false
• true

Tags

NGSS.HS-PS1-5

Increasing the concentration of the reactants will slow down the reaction.

• false 
• true

Tags

NGSS.HS-PS1-5

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

• transition state

• activation energy

• rate law

• collision theory

If the temperature is reduced, a reaction rate will ______

• increase

• decrease

• stay the same

Tags

NGSS.HS-PS1-5

Which of the following will lower the rate

of reaction?

• adding an enzyme to the reaction

• decreasing the temperature from 40°C to

  10°C

• breaking a chunk of calcium up into

  smaller pieces

• increasing the amount of solute

  dissolved in a solution

Tags

NGSS.HS-PS1-5