KINETICS

Which of the following increase the reaction rate?

• less surface area

• lower temperature

• increasing pressure

• increased concentration

Tags

NGSS.HS-PS1-5

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

Tags

NGSS.HS-PS1-5

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

• increase

• decrease

• stay the same

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

The rate of a chemical reaction is NOT affected by which of the following:

• temperature
• concentration
• particle size (surface area)
• All of these affect reaction rates

Tags

NGSS.HS-PS1-5

Rate of chemical reaction means

• amount of product formed
• speed of reaction
• concentration of reacting particles
• combining reactants with products

Tags

NGSS.HS-PS1-5

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

• increased concentration of reactants
• increased surface area
• increased speed of particles.
• better orientation of reactants

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

Catalysts permit reactions to happen with a __________ activiation energy.

• lower
• higher

Tags

NGSS.HS-PS1-4