Reaction Rate

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

• larger

• smaller

You add more bodies into a "mosh pit" to hope for more collisions.  You have increased-

• temperature

• concentration

• pressure

• catalyst

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.

• Pressure

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

• Concentration

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

• Surface Area

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

• Temperature

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

• Catalyst

• 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

Tags

NGSS.HS-PS1-5

Crushing a solid into a powder will increase reaction rate because:

• the particles will collide with more energy

• the orientation of colliding particles will be improved

• the activation energy barrier will be lowered

• the powdered form has more surface area

Increasing the ____ causes the particles (atoms

or molecules) of the reactants to move more quickly so that

they collide with each other more frequently and with more

energy.

• Catalyst

• Surface Area

• Temperature

• Concentration

Tags

NGSS.HS-PS1-5