WorksheetsChemistry Review Guide #2
Total questions: 20
Worksheet time: 10mins
According to collision theory, for a reaction to occur, particles must....
merge
collide
change their identity
According to collision theory, for a reaction to occur, particles must...
become "one"
be very cold
collide with enough energy
According to the collision theory, for a reaction to occur...
particles must be frozen
particles must be oriented correctly
particles must be parallel to each other.
The rate of a reaction is how fast the _________ are changed into ________.
reactants, products
products, ingredients
products, reactants
ingredients, a mixture.
The word that indicates the amount of space that an object occupies.
concentration
density
volume
surface area
The reaction rate will increase as you __________ the volume.
increase
decrease
The exposed surface available to react is the...
volume
surface area
density
mass
The reaction rate will increase as the surface area...
increases
decreases
The average kinetic energy (energy of motion) of all the particles is...
the volume
the mass
the density
the temperature
The reaction rate will increase as the temperature...
increases
decreases
The "matchmaker" that orients the reactants to react more easily without it being used as a reactant is called a...
energy moment
concentration
catalyst
density equivalent
The reaction rate will increase as you__________ a catalyst.
Add
Remove
The number of particles available to react is the....
concentration
mass
molar quantity
enzyme
The reaction rate will increase as the concentration...
increases
decreases
A catalyst increases the rate of the reaction because...
it increases the activation energy
it lowers the activation energy
it increases the energy of the reactants
it decreases the energy of the products.
Lactase, a biological catalyst, helps you digest lactose. It is also called a/an...
converter
volumetric mechanism
enzyme
product
You have a sugar cube and want to increase the surface area. How would you do this?
crush it
melt it
combine it with another
put foil on one side.
You place a sugar cube in cold water. What THREE methods will increase how fast it dissolves?
Stir the water and sugar cube.
Crush the sugar cube
Add more water
Heat up the water
Suppose you add magnesium to vinegar and see bubbles. If you stir it, you will see more bubbles. What reaction rate factor are you changing?
The concentration
the surface area
the speed of the particles
the orientation of the particles.
You strike a match to make it light. That means you've started the reaction by providing energy. What is this energy called?
The energy (enthalpy) of the reactants
The energy (enthalpy) of the products
The entropy and measurement of disorder
Activation energy
