Pre-Lab Assignment for Exp 2: Separation of a Mixture 1. Define the term physical properties and give two examples. 2. Define the term chemical properties and give two examples. 3. Define the term physical changes and give two examples. 4. Define the term chemical changes and give two examples. 5. What compound is separated by a magnet in this experiment? 6. What compound is separated by extraction in this experiment? 7. What is the purpose of drying the remaining solid after extraction under a heat lamp? 8. An empty evaporating dish weighs 20.000g. An unknown mixture containing Fe,NaCl, and SiO2 is added to the dish and the dish and mixture together weigh 35.000g. The mixture is then stirred thoroughly with a magnet which is then removed, and the dish and remaining mixture weigh 29.550 g. After the extraction with several portions of water and drying the remaining solid, the dish and the remaining solid weigh 27.680g. Calculate the mass and mass percent of Fe,NaCl, and SiO2 in this sample. Show all your work