Which piece of apparatus could be used to measure the volume of gas produced during a reaction?
Gas syringe
Gas jar
Gas bottle
How could you follow the rate of a reaction that forms a precipitate?
Measure change in mass
Judge by eye when a cross placed under the reacting mixture disappears
Measure the volume of gas produced
How does rate of reaction change if the concentration of a reactant is increased?
Rate of reaction is unchanged
Rate of reaction decreases
Rate of reaction increases
How does a catalyst increase the rate of reaction?
It gives the reacting particles more energy
It lowers the activation energy
It increases the number of reacting particles
What change increases the energy of reacting particles?
Increasing the surface area to volume ratio
Increasing the temperature
Increasing the concentration
A graph of volume of product is plotted against time. If the line is steep, what does that tell you about the rate of reaction?
It does not tell you anything about the rate of reaction
The rate of reaction is slow
The rate of reaction is fast
A graph of volume of product is plotted against time. If the line is horizontal, what does that tell you?
The rate of reaction is at its fastest
The reaction has a steady rate of reaction
The reaction has finished
What is the average rate of reaction if 60 cm3 of gas is produced in 30 seconds?
2 cm3/s
2 cm3/min
0.5 cm3/s
How do you find the rate of reaction at a specific time?
Find the gradient of a line between 0 seconds and that time
Find the gradient of the tangent to the line
Find the gradient of a line between this time and the next plotted point
What is an enzyme?
A biological catalyst
A living organism, such as yeast
A type of industrial process