Please helpPlease indicate the question you are doing Part A: CALCIUM - determine how mamy pieces of calciumneedA.Fill a large test tube with water and invert it into a beaker full of water.Drop a piece of dean calcium into the beaker and hold the inverted test tube immediately above it.When the reaction is over (or when the tube is full of gas), remove it from the beaker but keep it inverted and bring a flaming splint to itsmouth.Save the liquid in the beaker and test it with a strip of red litmus paper.i.ii.iii.iv.OBSERVATIONS: gas produced; pop with flaming splint; water turned red litmus paper blueВ.Hold a flake of calcium with the crucible tongs and put it into a bunsen flame for 2-3 minutes.Allow the residue to cool.Wet a piece of red litmus paper and touch the residue.Then drop the residue into a test tube and half fill it with water.Does the residue dissolve?i.ii.ii.iv.OBSERVATIONS: residue did not dissolve very well and turned litmus paper blueC.Very carefully drop a small piece of clean calcium into 5 mL of hydrochloric acid in a small test tube and collect the gas by placing yourthumb over the test tube,ii.i.Test the gas with a flaming splint.OBSERVATIONS: vigorous reaction and white solid formed; gas popped in a flaminR splintPart B: MAGNESIUM - determine how many pieces of magnesium you needD.Clean two pieces of magnesium ribbon.Drop one piece into a test tube of cold water and the second into a test tube of very hot water.Observe each test tube carefully for signs of a reaction.Drop a piece of red litmus paper into each test tube.Remove the magnesium strips and re-use them for the next experiments.i.iv.V.OBSERVATIONS: cold water showed no reaction; hot water showed vigorous reaction; red litmus did not turn blueVi.Drop a piece of clean magnesium from the cold tube into a test tube containing some dilute hydrochloric acid.vii.Test the gas with a flaming splint.OBSERVATIONS: magnesium reacts producing bubbles: gas popped in a flaming splintE.Burn a strip of magnesium in the air using the crucible tongs and transfer the residue to a test tube of water.ii.Note the solubility of the solid.Drop a piece of red litmus paper into the test tube.Heat the liquid and note all changes.iv.OBSERVATIONS: bright light produced, solidonly slightly soluble: turned litmus paper blueB. 1. Compare the-chemical reactivity of calcium and magnesium.2. Explain the red litmus paper result.3. Can you suggest a reason for the difference in chemical reactivity of these two elements even though theyare in the same group?

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