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#Add 2 drops of [[pH Indicator]] to the [[Test Tube|test tube]] and record the [[colour]] and [[pH]].
#Repeat steps 1 and 2 for each [[water]] [[sample]].
====Finding Solutes====#[[Measure]] the [[mass]] of a [[Watch Glass]].#Add 4ml of a [[water]] [[sample]] to the [[Watch Glass|watch glass]].#Add 150ml of tap [[water]] to 250ml [[beaker]].#Place the [[Watch Glass|watch glass]] on top of the [[beaker]].#Heat the [[water]] in the [[beaker]] to [[boiling]] and keep [[boiling]] until all the [[water]] in the [[Watch Glass|watch glass]] has [[evaporating|evaporated]].#Allow the [[water]] to cool and then [[observe]] the [[Watch Glass|watch glass]] for any remaining [[solute]]s.#Measure the [[mass]] of the [[Watch Glass]] with [[solute]]s and subtract the [[mass]] of the [[Watch Glass|watch glass]] to find the [[mass]] of the [[solute]]s.#Repeat the [[experiment]] for each [[water]] [[sample]] using a clean [[Watch Glass|watch glass]] each time.====Purifying Water====#Add 40ml of a [[water]] [[sample]] to a 100ml [[Conical Flask|conical flask]].#Attach a [[bung]] and [[Delivery Tube|delivery tube]] to the top of the [[Conical Flask|conical flask]].#Place a [[Test Tube]] in a cold [[Water Bath|water bath]].#Heat the [[water]] [[sample]] in the [[Conical Flask|conical flask]] and arrange the [[Delivery Tube|delivery tube]] to pass the [[Water Vapour|water vapour]] into the cold [[Test Tube|test tube]] where it will [[condensing|condense]].#Use the [[water]] collected to repeat tests for [[pH]] and finding [[solute]]s.#Repeat 1-5 for each [[water]] [[sample]].