Reaction Rates Basics Question Preview (ID: 49032)


HS Reaction Rates, And Collision Theory Basics. For ESL Or Below Level Students. TEACHERS: click here for quick copy question ID numbers.

a reaction rate can be calculated as:
a) Δ concentration / Δ time
b) Δ kinetic energy / Δ time
c) Δ temperature / Δ time
d) Δ concentration / n. of moles

a reaction rate can be calculated as:
a) Δ concentration / Δ time
b) Δ pressure / Δ time
c) Δ temperature / Δ time
d) Δ concentration / n. of moles

according to the collision theory
a) reactants must collide with the proper orientation
b) every collision forms products
c) the products are called activated complex
d) the reactants are called activated complex

the activated complex
a) has higher energy than the reactants
b) has lower energy than the products
c) has the same energy as the reactants
d) does not require energy to form

concentration is
a) quantity / volume
b) the rate of a reaction
c) the number of moles of a chemical
d) a form of energy

activation energy
a) is the energy required to create the activated complex
b) is the energy released by an activated complex
c) is the energy of the reactants
d) is the energy of the products

a catalyst (find the false one)
a) slows down reactions
b) reduces the activation energy
c) participates in the reaction but is not depleted
d) creates an activated complex with less energy

If the concentration of the reactants increase
a) the reaction rate increases
b) the reactants energy increases
c) the reaction slows down
d) the activation energy is reduced

If the surface area of solid reactants increases
a) the creation of activated complexes is more likely
b) the reaction slows down
c) the activation energy is decreased
d) the pressure increases

When temperature increases (find the false one)
a) the activation energy increases
b) the reaction rate increases
c) the collisions have more kinetic energy
d) the collisions happen more frequently

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