SeperationofSolids
EXPERIMENT II: SEPERATION OF A MIXTURE OF SOLIDS
PURPOSE:
The purpose of this experiment was for me to become familiar with the separation of mixtures and solids and to learn separation techniques based on the chemical properties of a substance.
PROCEDURE:
Before beginning, I set up a data table to record data from the experiment.
1. Separating out the Iron
a) I used my digital scale to determine the mass of my weighing dish.
b) I emptied the entire mixture of solids from the plastic bag into the weighing dish and determined the gross mass of the total mixture and weighing dish. Then, I computed the net mass of the mixture:
c) I spread the mixture into a very thin layer over a full sized piece of paper.
d) I cut a second piece of paper into a 10-cm square. I weighed and recorded its mass and set it aside.
e) I wrapped a small square of clear plastic over the magnet and removed the iron powder/filings by passing the magnet closely over the surface of the entire mixture and repeated several times to make sure I’ve collected all the iron.
f) Holding the magnet over the 10-cm square of paper, I carefully removed the plastic and allowed all the iron to fall onto the paper. I weighed and determined the net mass of the iron powder/filings.
2. Separating out the Sand
a) I put the remaining mixture, containing sand, benzoic acid, and table salt into my beaker and added 50 mL of distilled water.
b) I set up the beaker stand and burner fuel and heated the beaker of solids and water to near boiling. I stirred the mixture to make sure all soluble material dissolved.
c) I poured the liquid while it is hot into a small paper cup.
d) I poured another 12 mL of distilled water into the beaker containing the sand, and brought the mixture to a boil, and poured again into the same cup used in 2-C. of Solids
e) I made an ice bath by placing a small amount of crushed ice and tap water into a coffee cup.
f) I made sure the ice bath level was higher than the solution level but
PURPOSE:
The purpose of this experiment was for me to become familiar with the separation of mixtures and solids and to learn separation techniques based on the chemical properties of a substance.
PROCEDURE:
Before beginning, I set up a data table to record data from the experiment.
1. Separating out the Iron
a) I used my digital scale to determine the mass of my weighing dish.
b) I emptied the entire mixture of solids from the plastic bag into the weighing dish and determined the gross mass of the total mixture and weighing dish. Then, I computed the net mass of the mixture:
c) I spread the mixture into a very thin layer over a full sized piece of paper.
d) I cut a second piece of paper into a 10-cm square. I weighed and recorded its mass and set it aside.
e) I wrapped a small square of clear plastic over the magnet and removed the iron powder/filings by passing the magnet closely over the surface of the entire mixture and repeated several times to make sure I’ve collected all the iron.
f) Holding the magnet over the 10-cm square of paper, I carefully removed the plastic and allowed all the iron to fall onto the paper. I weighed and determined the net mass of the iron powder/filings.
2. Separating out the Sand
a) I put the remaining mixture, containing sand, benzoic acid, and table salt into my beaker and added 50 mL of distilled water.
b) I set up the beaker stand and burner fuel and heated the beaker of solids and water to near boiling. I stirred the mixture to make sure all soluble material dissolved.
c) I poured the liquid while it is hot into a small paper cup.
d) I poured another 12 mL of distilled water into the beaker containing the sand, and brought the mixture to a boil, and poured again into the same cup used in 2-C. of Solids
e) I made an ice bath by placing a small amount of crushed ice and tap water into a coffee cup.
f) I made sure the ice bath level was higher than the solution level but