Homogeneous Mixture Lab Report

We organized how each substance was separated. Then, we used all the data that we collected and recorded to write our conclusion. 2. No, because this is the most correct and productive way to do the procedure without tampering with the other substances. If, we did the procedure in any order, it would’ve been harder to separate each substance, and some of the substances would’ve been

The original pigment also dissolves into the solvent. The problem being presented is which component has the higher percent composition by mass in the sand, salt, and iron mixture. The purpose of the experiment was to determine the percent composition by mass of each substance in the sand, salt, and iron mixture by separating those using different methods and then figuring out which substance has the highest percent

In this lab, a mixture of three solids was separated to their individual components through decantation,

9) Trial E: Remove the syringe and empty the beaker. Add a Thermometer to the beaker. Add 200 mL of Room Temperature water to the beaker and heat with a Bunsen Burner until it reaches 100° C. Remove the Bunsen Burner. Repeat Steps 5 & 6.

The purpose of this separation of a mixture lab is to give students the challenge of figuring out how to separate a provided mixture, and following through with their procedure. The mixture is composed of salt, sand, poppy seeds, and iron filings, and all of these components should be separated and dried as well as possible by the end of the lab.

If it were a compound, it would be a chemical combined elements in fixed ratios that could be separated chemically only. In our lab, we were able to separate the different substances using magnets, filters, and water, nothing chemical - we used physical properties. 6. In our lab, when we carried out the process of filtration, the sand remained on the filter paper. The filtrate is not a pure substance.

The organic layer on the top formed, and was also extracted out through vacuum filtration like the step before. The solid that was produced from the reaction was bright yellow in color. It then was set out to dry for a week, and worked on the next experiment time. After setting the solid aside, the original solution that was still in the separatory funnel, 14 mL of 10% NaOH was added. The aqueous layer was then again separated into a separate flask. This same step was repeated twice more. The aqueous solution that formed was then cooled in an ice-bath. Concentrated HCl was then added until a pH reading of 1 was reached making it an acidic solution. This took 13 mL of HCl to reach the adequate pH. Another precipitate formed from this process, and it was extracted through vacuum filtration. The solid precipitate that was formed was a cloudy white color. It also, was set out to dry for a week until the next experiment time.With the remaining solution in the separatory flask, CaCl2 (a drying agent, which helps dry the precipitate that was filtered out so that no extra liquid will be left over 5), was added. This solution was boiled over a steam bath until no bubbles were present, and left to dry

The Chemical Earth Part A: The mixtures that will be discussed in this report will be a using a concoction of sand, salt and water. This mixture will be separated into solids of different sizes, solids and liquids, different liquids and solids dissolved in different liquids. A second mixture that will be examined is water which would be separated into different gases. This report will summarise the different separating techniques in thorough detail and how it employed in the two different mixtures.

XII. Take the 250 ml beaker to your lab bench. Set up a gravity filtration with a plastic funnel, folded wet filter paper, and an Erlenmeyer flask. Pour the content in the 250 ml beaker slowly through the filter paper. Wash the filter paper with deionized water. Dispose of the filtrate in the proper labeled waste container.

As the water is being evaporated, go ahead and dry the SiO2 in the other dish on a separate hot plate. Let the dish dry completely, and wait to cool down to room temp. on a wire gauze then weigh them. 6) Step six is to place the evaporating dish containing the wet sand on the clay triangle stand and cover the dish evaporating dish with a clean, dry watch glass. Heat slow and watch until the lumps are goes break up and the sand appears to be dry.

The two experiments were, for the first experiment the group did the Magnesium and Hydrochloric acid (Mg and HCl)

In the lab “Mixed Substances,” the objective was to see how properties of individual substances compare with properties of a mixed substance. The word mixture can be defined as a combination of two or more substances that are mixed together physically, not chemically. A homogeneous mixture is a mixture in uniform structure or comparison throughout the substance (Ex. Milk/ Popsicle). Lastly, a heterogenous mixture consists of dissimilar parts and elements (Ex. Pizza/ Salad).

Submerge the graduated cylinder in the plastic tub so that it is completely filled with water. Hold the open end of the graduated cylinder and move it vertically upside-down where the open end of the graduated cylinder is still submerged in the plastic tub. Clamp the graduated cylinder the ring stand of the lab table to keep it in place. perforate a hole in the top of the rubber cork for the solution container. Cut a straw the length of about four inches. place the straw inside of the rubber cork hole. Set up your timer for two minutes.

5. Wet the paper with distilled water to hold it in place in the funnel. Transfer all the solution and the precipitate from the beaker using a rubber policeman. Wash the precipitate with two or three 5-mL portions of distilled water. Do this by adding each portion to the beaker in which you did the precipitation to transfer any remaining

1. Obtain a sample of the mixture. The mixture you will separate contains three components: NaCl, NH4Cl, and SiO2. Their separation will be accomplished by heating the mixture to sub-lime the NH4Cl, extracting the NaCl with water, and drying the remaining SiO2.