Describe5 marksStandard
Describe the reaction of magnesium with steam. In your answer include the observations made, an equation for the reaction, and an equation for the reaction of the solid product with water.
CAIE A Level Chemistry 9701 · Group 2
Group 2: describe question
How this question is marked
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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