Reaction Rates

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

• concentration

• surface area

• temperature

• reactants

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

• false 

• true

Tags

NGSS.HS-PS1-5

This slows down or even stops a chemical reaction.

• de-activator

• catalyst

• enzyme

• inhibitor

Tags

NGSS.HS-PS1-5

How quickly a reaction will take place is called what?

• Reaction Rate

• Temperature

• Catalyst

• Pressure

Tags

NGSS.HS-PS1-5

Match the following Reaction Rate affect with the definition of why it speeds up reactions.

• Surface Area

• This substance speeds the reaction rate by lowering the activation energy needed to start the reactions

• Concentration

• The higher the ______, the faster the reaction because more particles are moving and colliding, thus contacting with each other to react.

• Catalyst

• The more of this causes there to be more room for the particles to collide and react with one another

• Pressure

• The higher the ____ = the smaller of the volume, causing more particle collisions

• Temperature

• Higher amounts of this of this leads to more frequent collisions between reactant particles

Tags

NGSS.HS-PS1-5

What factor affects the rate of a chemical reaction by increasing the kinetic energy of particles?

• Catalysts

• Concentration

• Surface Area

• Temperature

Tags

NGSS.HS-PS1-5

What factor affects the rate of a chemical reaction by increasing the concentration, therefore speeding up the reaction?

• Catalysts

• Concentration

• Surface Area

• Temperature

Tags

NGSS.HS-PS1-5

What substance speeds up the reaction rate by lowering the activation energy needed to start the reaction?

• Concentration

• Catalysts

• Pressure

• Temperature

Which factor affects the reaction rate by increasing the volume for gaseous reactants, causing more particle collisions?

• Temperature

• Concentration

• Surface Area

• Pressure

List four factors that affects the rate of a reaction

• temperature

• concentration

• surface area

• volume

• catalysts

Tags

NGSS.HS-PS1-5