Q.1
A catalyst is...
  • a substance that slows down a chemical reaction, and is used up in the reaction
  • a substance that speeds up a chemical reaction, and is used up in the reaction
  • a substance that speeds up a chemical reaction, but is not used up in the reaction
  • a substance that slows down a chemical reaction, but is not used up in the reaction
Q.2
Which piece of laboratory equipment would be useful for measuring the volume of gas given off?
  • Beaker
  • Gas syringe
  • Conical flask
  • Burette
Q.3
If 80 cm of gas was given off in a reaction in 20 seconds, what was the average rate of reaction?
  • 4 cm/s
  • 4 cm3/s
  • 1,600 cm3/s
  • 0.25 cm3/s
Q.4
Which of the following methods is NOT a valid way to measure the rate of a chemical reaction?
  • Measuring the mass of a reaction mixture
  • Measuring the volume of gas given off
  • Measuring the light transmitted through a solution
  • Measuring the volume of liquid at the start of the reaction
Q.5
In order to accelerate the rate of a chemical reaction, there are two things which we can do. Pick the correct combination.
  • Decrease the chances of particle collision Increase the energy the particles collide with
  • Increase the chances of particle collision Increase the energy the particles collide with
  • Increase the chances of particle collision Decrease the energy the particles collide with
  • Decrease the chances of particle collision Decrease the energy the particles collide with
Q.6
Which of the following is NOT a factor that affects the rate of a chemical reaction?
  • Temperature
  • Concentration
  • Surface area
  • The speed at which the chemicals are mixed
Q.7
One method of increasing the chances of particles colliding during a reaction between gases is to...
  • increase pressure
  • decrease temperature
  • use a catalyst
  • decrease concentration
Q.8
Chemical reactions can only occur when...
  • particles come together with sufficient energy
  • particles come together for a sufficient amount of time
  • particles mix together
  • particles are able to separate
Q.9
One method of increasing the energy the particles react with is to...
  • increase pressure
  • increase temperature
  • use a catalyst
  • decrease concentration
Q.10
The smallest amount of energy required by particles to react is called...
  • chemical energy
  • reaction energy
  • enabling energy
  • activation energy
0 h : 0 m : 1 s