First day of Mystery Lab

Today we began our lab to figure out who  the murder was at the crime scene. We first tested the unknown solution with Sodium chloride and Sodium Carbonate to see what type of solution the unknown was. Once we figured out it was Silver nitrate (because it formed a participate) we moved on to the next step. We then mixed 25mL of Silver nitrate with 50mL of Sodium Carbonate in a beaker. Then we poured the solution into a weighed filter paper over a flask. Then we let it drip until all liquid was taken out and then we left it on top to dry.
Result of Another high school group lab, shown dramatically