Physical Separation Lab Essay, Research Paper

9/27/00

Chemistry Lab Physical Separation Lab

Purpose:

The purpose of this lab was to try different methods to physically separate various

materials. The variables for this lab were the evaporation of the water and/or the loss of sand or salt. My

hypothesis for this lab was that the sand could be filtered out of the water and

AUTHOR gouverneur Page PAGE 1 DATE 10/12/00

To Whom It May Concern:Dea

Water

Filter paper

Equipment:

Ring stand – used to hold the wire gauze and the evaporating dish

Ring – used to hold the wire gauze in place on the ring stand

Wire gauze – used to set the evaporating dish on to be heated

Butane burner – used to heat the salt water solution to evaporate the water

Evaporating dish – used to evaporate the water from the salt

Balance – used to measure the mass of the solutions

Safety:

Safety procedures included safety glasses and aprons.

Disposal:

Disposal procedures included returning the sand to a disposal jar and dumping

the salt and water down the drain.

Steps:

1. Weighed filter paper and recorded results.

2. Weighed evaporating dish and recorded results.

3. Poured approximately 10 grams of sand on the filter paper and recorded

results of mass.

4. Poured sand into evaporating dish.

5. Weighed another piece of filter paper and recorded results.

6. Poured approximately 10 grams of salt on the filter paper and recorded

results of mass.

7. Mixed sand and salt together.

8. Mixed in a small amount of water.

9. Used filter paper and funnel to separate sand from salt and water.

10. Emptied evaporating dish.

11. Put the separated sand back into the evaporating dish, measured mass, and

recorded results.

11. Repeated steps 1, 2, and 6.

11. Mixed in a small amount of water and find the mass.

11. Boiled the water until it evaporated completely.

11. Re-weighed the salt in the evaporating dish and recorded results.

Data:

Table 1: Separation of Salt and Sand

Dish MassSalt MassSand MassTotalDry MassSand Left% Error39.1g10.2g10.4g59.7g51.7g10.6g1.9%

Example:

10.6 – 10. 4= 0.2 0.2 / 10.4 = 0.0192 0.0192 * 100 = 1.9%

Table 2: Separation of Salt and Water

Dish MassSalt MassSand MassTotalDry MassSalt Left% Error39.1g10.0gN/A49.1g48.5g9.8g2%

Example:

10.0 – 9.8 = 0.2 0.2 / 10.0 = 0.02 0.02* 100 = 2%

Observations:

I observed the salt dissolve in the water when the two were mixed. I also

observed how when the mixture was poured through the filter all of the sand remained in the filter paper

while the dissolved salt and water went into the beaker.

Conclusions:

8. Most of the salt was separated from the sand.

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