Alkaline Earth Metals Reactivity

Nitrate solutions of the alkaline earth metals were used. They were reacted with potassium chromate, potassium carbonate, and potassium sulfate. Three drops of each solution was used.

The order of which substance was added first was not an important factor.

The first two pictures below are the same, just a different resolution. You can use the smaller version is good for seeing the overall trend. Use the larger version to see the exact detail of the individual reactions.

The two reactions that have the most questions are in a more detailed picture at the very bottom.

The reaction with magnesium nitrate with the potassium carbonate had a precipitate, although not very pronounced.