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WorksheetsUnit 3- Collision Theory & Reaction Rates
Total questions: 20
Worksheet time: 12mins
Rank the state os matter from FASTEST to SLOWEST particle speed.
solid, liquid, gas
liquid, solid, gas
gas, liquid, solid
gas, solid, liquid
The higher the temperature a substance has the
more energy it has
less energy it has
In a solution when particles collide, most of the collisions
are successful
are unsuccessful
result in a chemical reaction
do not result in a chemical reation
What factors affect reaction rate?
size of atoms
temperature
concentration
surface area
catalysts
A log is burning in a campfire. If the concentration of oxygen reaching the log is increased, what will happen to the reaction rate?
reaction rate decreases
reaction rate increases
reaction rate remains the same
What is necessary for a chemical reaction to occur?
Correct orientation of particles when they collide
particle collisions
an increase or decrease in temperature
particle collisions with sufficient energy
a catalyst
What happens to reaction rate if surface area is decreased?
it increases
it decreases
it stays the same
What happens to reaction rate when a reactants concentration is increased?
it increases
it decreases
it remains the same
What happens to reaction rate when temperature is decreased?
it increases
it decreases
it stays the same.
What does a catalyst do to speed up a reaction?
It reduces the surface area of the reactants
It increases the surface area of the reactants.
It reduces the required energy for a chemical reaction to occur
It increases the required energy for a chemical reaction to occur
A reactants surface area is increased. What happens?
more collisions occur
the same number of collisions occur
greater collision energy
less collision energy
the same collision energy
A reactants concentration is increased. What happens?
more collisions occur
the same number of collisions occur
greater collision energy
less collision energy
the same collision energy
A reactants temperature is increased. What happens?
more collisions occur
the same number of collisions occur
greater collision energy
less collision energy
the same collision energy
The minimum quantity of energy which the reacting species must possess in order to undergo a specific reaction.
collision theory
activation energy
reaction rate
chemical reaction
the rate at which a chemical reaction takes place
activation energy
collision theory
reaction rate
chemical reactions
A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
catalyst
products
reactants
chemical reaction
A substance that takes part in and undergoes change during a reaction.
products
reactants
catalyst
collision
A substance that is formed as the result of a chemical reaction.
products
reactants
catalyst
collision
Describes the 3 reasons chemical reactions occur.
collision theory
reaction rate
chemical reaction
activation energy
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
collision theory
reaction rate
chemical reaction
activation energy
