Ch. 17 (Reaction Rates - Kinetics)

What quantity is defined by the rate of decomposition of a reactant at a specific time?

• Specific rate constant

• Rate order

• Instantaneous rate

• Catalyst

Tags

NGSS.HS-PS1-5

The term that describes the change in the concentration of a reactant divided by the change in time of the reaction is the ______________.

• Rate constant

• Average reaction rate

• Activated complex

• Chemical reaction

Tags

NGSS.HS-PS1-5

What is the term given to a temporary arrangement of atoms that may produce either products or reactants?

• Transition state

• Collision

• Reactant

• Activation energy

What is the term used to describe the minimum energy needed to form an activated complex?

• Temperature

• Kinetic energy

• Activation energy

• Potential energy

When the concentration of a reactant is increased, the ______________.

• Reaction speeds up

• Reaction slows down

• Reaction stops

• Reaction rate does not change

Tags

NGSS.HS-PS1-5

What will happen when you decrease the surface area of a reactant?

• The reaction speeds up.

• The reaction slows down.

• The reaction stops.

• The reaction rate does not change.

When you increase the temperature of a chemical reaction, the ______________.

• Reaction speeds up

• Reaction slows down

• Reaction stops

• Reaction rate does not change

Tags

NGSS.HS-PS1-5

A substance that speeds up the reaction rate but is not consumed in the reaction is a(n) ______________.

• Reactant

• Product

• Catalyst

• Inhibitor

Tags

NGSS.HS-PS1-5

What happens to the activation energy of the reaction when a catalyst is present?

• The activation energy does not change.

• The activation energy decreases.

• The activation energy increases.

• The reaction stops.

What is the name given to a catalyst that exists in the same physical state as the reaction being catalyzed?

• Homogeneous catalyst

• Heterogeneous catalyst

• Solid-state catalyst

• Phemeral catalyst