Data Collection (Acquiring competencies) Following your detailed protocol based on the videos, perform all the experiments. Record your observations and take pictures of your key steps in the process. Your observations and images need to be incorporated in your data section and this section should be as detailed as possible as you will use this information to complete your discussion. Data Processing (Representation) Using your collected measurements, fill out the table below. Substance Before separation (g) After separation (g) Percent recovery (after/before×100%) (%) Cause for change in mass Salt (NaCl) NaN NaN NaN NaN Sand (SiO2) NaN NaN NaN NaN Iron (Fe) NaN NaN NaN NaN Total NaN NaN NaN NaN (Manipulation) Calculate the percent composition of the mixture (% NaCl, % iron and % sand) using the original amounts of each substance. Show your stepwise calculation with the appropriate units. (Manipulation) Calculate the percent composition of the mixture (% NaCl, % iron and % sand) using the recovered amounts of each substance. Show your stepwise calculation with the appropriate units. (Manipulation) Using the total mass of the mixture before and after the separation, calculate the % recovery. Show your stepwise calculation with the appropriate units. (Assumptions and Analysis) Fill in the following table using the observations and data from your experiments. Assumptions made Testing the assumption If assumptions are wrong ... The distilled water is pure Evaporate it and check for residue The density would change depending on the density of the contaminant There is no iron in the sand NaN The magnet will extract sand along with the filings. Our balance is accurate NaN NaN NaN NaN NaN