Year 9 Energetics Revision Quiz (9CE)

Select two ways you could measure the rate in a reaction where a gas is produced.

• Change in mass in certain time

• Volume of gas produced in certain time

• The total volume of gas produced

• The total change in mass overall

True or false: An anomaly is a result which is not repeatable.

How do you deal with anomalies when calculating means?
(Pick two)

• Keep them in

• Exclude them when adding results together

• Check that you have not counted them when calculating the mean

• Calculate two means, one for anomalies, one for non-anomalies.

To test for oxygen we use a g............. s.........

If oxygen is present, the glowing splint will ...

• Make a squeaky pop

• Relight

• Go out

• Cause an explosion

When testing for hydrogen we use a ................ splint.

If hydrogen is present, the lit splint will ...

• Go out

• Relight

• make a squeaky pop

• start to glow

Select all answers about catalysts that are true:

• They speed the rate of reaction up

• They lower the activation energy

• They allow reactions to proceed at lower temperatures

• They are called enzymes when they occur in the body

• They are used up in reactions

What will a catalyst do to the overall amount of product made?

• More product will be created in a complete reaction

• Less product will be created in a complete reaction

• The same amount of product will be created in a complete reaction

How can the surface area of a substance be increased?

• Increase particle size
  

  (big bits = small area)

• Decrease particle size
  

  (small bits = big area)

• Heat the particles up

• Use a catalyst