WorksheetsFACTORS AFFECTING RATE OF REACTION
Total questions: 10
Worksheet time: 5mins
1. Which of the following is NOT TRUE about catalysts?
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process.
Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.
Enzymes are proteins that act as catalysts in biochemical reactions.
None of these
In which temperature will the rate of reaction between Sodium chloride and water likely to be greatest?
10°C
20°C
30°C
40°C
It refers to the minimum energy required for reactions to start.
Activation energy
Kinetic energy
Potential energy
Stored energy
Marble reacts with hydrochloric acid to produce calcium chloride, water and
carbon dioxide. In which of these mixtures is the rate of reaction likely to be
the greatest?
1g of marble chips in 100cm3 of HCl at 20°C
1g powdered marble in 100cm3 of HCl at 30°C
1g powdered marble in 100cm3 of HCl at 20°C
1g marble chips in 100cm3 of HCl at 30°C
Which of the following is NOT A FACTOR that affects the reaction rates?
Reactant concentration
Catalysts
Particle size
Shape of particles
How does increasing the concentration affect a reaction rate?
makes it go faster (increases rate)
makes it go slower (decreases rate)
Which of the following increases a reaction rate without being used up?
Product
Reactant
Catalyst
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the frequency of the collisions among particles.
TRUE
FALSE
If solution A is put into an ice water bath before being combined with solution B, how would the reaction rate be altered?
it would be faster (rate increases)
it would be slower (rate decreases)
Which of the following best describes the Collision Theory?
reactants must collide, collide with proper orientation, and enough activation energy
products must collide, collide with proper orientation, and enough activation energy
the activated complex must collide, collide with proper orientation, and enough activation energy
reactants and products together must collide, collide with proper orientation, and enough activation energy
