Chemical Reactions and Factors Affecting Reaction Rate

The rate of a reaction increases as temperature__________________.

• Decreases

• Increases

• Stays the Same

Tags

NGSS.HS-PS1-5

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

• larger 

• smaller

Catalysts permit reactions to proceed along a ___________energy path.

• lower

• higher

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

• larger

• smaller

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

Exothermic reactions release heat to the surroundings.

• true

• false

Tags

NGSS.HS-PS1-4

Which of the following are the factors that affect the rate of chemical reaction? (Check the boxes that apply.)

• Surface Area and Particle Size (Solid Reactants)

• Nature of Reactants

• Temperature

• State of Matter

• Concentration of Solutions

Tags

NGSS.HS-PS1-5

Collision theory states that ______________.

• All collisions lead to chemical reaction .

• Most collisions lead to chemical reactions.

• Very few reactions involve particle collisions.

• Effective collisions lead to chemical reactions

Tags

NGSS.HS-PS1-5