Exploring the Chemical World, PGCC, 2003
125 NAME ______________________________ SECTION ________________ PARTNER(S)_________________________ DATE ___________________ INVESTIGATING SOLUTIONS The objective of this activity is to uncover characteristics of a variety of solutions and factors that affect the making of solutions. Pre-Lab Queries Based on the work you have done in the laboratory (or course) so far this semester, explain how you could tell if a liquid you were given was a solution or pure substance. .1.
Make a sample of salty water by placing a small amount of salt in a test tube about half full of distilled water and shaking the tube. For the second mixture place a very small amount of powdered coffee creamer in the same amount of water, and for the third mixture place sand in water. How could you recover the NaCl and determine the % salt in the water? Make the series of observations as suggested in the table below. Perform whatever procedure will help you make the observation. For each mixture and observation, insert a descriptor which best fits.