Separation Of Mixtures Essay

How to Separate Different Mixtures by Taking Advantage of Their Chemical and Physical Traits

Badria Al Hosani Grade 10 Chemistry 21st of October 2014 Mrs. Stewart

Research question:
What is the effect of chemical and physical traits of a substance have on the way its separated?

Background
This experiment was conducted to determine how to separate mixtures, taking advantage of their chemical and physical traits. The mixture couldn’t be separated in one step, but multiple steps in multiple ways to completely and successfully separate the mixture. Mixtures are physically combined, not

Place the beaker containing the wet sand on a hot plate set to “medium.” Heat until the sand appears dry and free flowing, about 5 minutes. Remove the beaker from the hot plate using the beaker tongs and let it sit until cool enough to touch.
12. Determine the mass of the beaker plus sand to the nearest 0.01 g, Record.
Analysis
Table 1: Quantative Data of Mass
Mass of 250-mL beaker 98.35 g
Mass of 250-mL beaker + sample 131.77 g
Mass of 100-mL beaker 50.34 g
Mass of 100-mL beaker + iron filings 52.87 g
Mass of 250-mL beaker + dried sand 129.26
Filter paper 2.12
Filter paper with sand 8.19

Table 2: Qualitative Observations of Substances
Salt Very tiny pieces of crystal, white
Salt-water solution Foggy
Iron filings Magnetic, metallic
Separated sand Somewhat sticky/clumpy

Calculations:
First find the mass of a 250 mL beaker only, then get the beaker with the sample and find that mass, then minus the mass of the empty beaker from the beaker with the sample in it, and there’s your answer.
Which is 131.77 – 129.26 = 2.55 g of iron filings.
Finding percent yield: actual yield/theoretical x 100%
Finding percent yield: 2.55/3 x 100% = 86.667 %

Finding the amount of iron filings in a 250 mL beaker.

Percent of