10.1.2: The reactions of the group 2 metals with water
E-assessement - B1: Periodic Table
Activity - Class demonstration (about 40 minutes)
The students are shown the reaction of calcium with water.
Points to include
Reaction with magnesium set up under a glass filter funnel in a large beaker with inverted test tube to collect gas. Add little phenolphthalein to the water. This should stand for a couple of weeks throughout the unit and be referred to from time to time.
Write up the demonstration (1 paragraph) using the notes taken during the class to "compare and contrast the reaction of group 1 and 2 metals with water. Suggest trends that may be extrapolated about the properties of group 2 metals.