Alkaline Earth Element Lab

Alkaline Earth Element Lab

Justin Vinansaca

VTHS

12/03/18

Abstract: The problem in this lab is to compare the abilities of the alkaline earth elements to form precipitates as a result of a chemical action. The students will combine elements and then record what they observe.

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Introduction: The purpose of this lab was to observe if a precipitate was formed by combining elements. To determine this we used eye droppers and a spot plate. “A precipitate is a solid that forms out of solution.” (De Leon Pg1). This is formed because Of certain Properties that are present in the Alkaline earth Metal Group.

Experiment/Procedure

The Materials we used in the lab were, Safety goggles, a spot plate, a sheet of notebook paper, and dropper bottles of Magnesium nitrate, calcium nitrate, barium nitrate, strontium nitrate, potassium carbonate, potassium sulfate, and potassium chromate.

First thing we did was take the spot plate and set it on the notebook paper. We then labelled it depending on where the chemicals will go. After that we put 3 drops of the non-potassium chemicals into each of the three dots in their row. Next we took the Potassium Carbonate and dropped three drops into each spot in its column, and observed the reaction in each. We then did the same thing with the other two potassiums.

Analysis/Results:

Alkaline earth metal

Carbonate

Sulfate

Chromate

Magnesium

Slightly

Nothing

Nothing

Calcium

Cloudy

Nothing

Nothing

Strontium

Very Cloudy

Cloudy

Nothing