Lab #1: Separation of a Mixture
Mr. Mejia
10/3/14
Separation of a Mixture Lab Report
Abstract
The purpose of the experiment was to separate an initial heterogeneous mixture composed of 5.00 grams of salt, 2.00 grams of sand, 50.0 mL of water, 15.00 grams of pebbles, and 1.00 gram of iron filings, and leave as much salt as possible remaining. Using separation techniques including magnetizing, evaporation, filtration, etc. the heterogeneous mixture was thoroughly separated into 4.88 grams of salt. There have been some errors regarding the isolation techniques and processes, however, the mass of salt at the end is substantial enough to conclude that results obtained are sufficient compared to the initial mass
Introduction and Background
The point of this experiment was to separate the different components present in a heterogeneous mixture. In doing so, four goals/checkpoints were expected to be met including learning how to use the lab materials, applying knowledge of different separation techniques, applying the scientific method to a problem, and applying the knowledge of lab safety rules and regulations. The expectations were to take the heterogeneous mixture of sand, salt, pebbles, iron filings, and water and use separation techniques to isolate the salt and iron filings (the water wasn’t needed at the end, and the pebbles and the sand were not separated from each other under the teacher’s express permission). Methods of isolation utilized include magnetism, filtration, and evaporation.
Magnetism: a useful isolation technique in this experiment, a magnet was used to separate the iron filings from the initial heterogeneous solution
Filtration: the isolation technique which is accomplished by filter paper and a funnel. The filter paper is folded twice ramen noodle style and inserted into the funnel. From there, the heterogeneous mixture may poured into the filter to isolate the sand and pebbles from the mixture