Sodium silicate

Discussion of results: Multiple tests were done in order to identify and then confirm the identity of an unknown substance. The tests done to identify the compound included preliminary tests, solubility tests, and testing for anions and cations. In order to confirm the identity found, reactivity tests were then completed. The first test performed was a preliminary test that simply showed that the unknown compound was a powdery, white solid with no smell. A qualitative solubility test was…

In this experiment, qualitative analysis was used to identify two cations. Lead was identified in Part A, barium was identified in Part B and different flame colors were observed with various metal chloride solutions in Part C. Formula unit, total ionic, and net ionic equations were written for the confirmation reactions for both lead and barium. If this experiment was repeated, barium could be confirmed by the yellow precipitate BaCrO4 after confirming that the solution was clear and any…

At first glance, all the substances may have been considered to be similar, as they are all white substances that are generally fine powder or small crystals. However, the lab revealed substances C: citric acid, D: sucrose, and H: benzoic acid to be covalent compounds, while the remaining substances to be all ionic. The previously stated covalent compounds all were found to have low relative melting points when heating them on a hot plate, but they had mixed results to their solubilities:…

skeletal muscle, the heart muscle depolarizes automatically when external stimuli are not present. This is called automaticity, which happens when the plasma membranes in heart muscle cells allow sodium to leak into the cell at a faster rate than potassium is moving across the membrane (book). The sodium moving inside the cell causes it to progressively…

The results showed that the bioluminescent bacteria was not affected by sodium chloride. They can actually survive in both fresh and saltwater. I discovered that the light intensity of the bacteria stayed between 0.02 and 0.07 lux. sodium chloride seemed to not affect the light intensity at all. In my background research I discovered that pollutants decrease light intensity of the bacteria. To learn more I use sodium chloride as my toxic pollutants and tested its effect on light intensity.…

to see if the combination and specific concentrations of sodium thiosulfate plus sodium hypochlorite are able to produce second degree burns on a person within 10 seconds. In order for a second degree burn to be possible we must reach a temperature of at least 56°C (133°F) in order to create burns up to third degree for the time the chemical stayed on the worker. Now the dumpster contained 6% mass sodium hypochlorite and 20.0% mass of sodium thiosulfate. Which when we calculate the molarity of…

prepare the absorbent, we will be using sodium alginate and calcium carbonate.1Sodium alginate is a common additive to foods, so there are several types. The type we will be using is called sodium;3,4,5,6-tetrahydroxy oxane-2-carboxylate. There are several sources to buy sodium alginate. However, we will buy it from Modernist Pantry, which the sodium alginate concentration has already been prepared. Before the preparation of calcium alginate itself, sodium alginate should be kept in a 39.2…

Salt is a unique yet very flexible substance that the earth and most inhabitants need to survive. Since early times it has been a key part of a social and cultural aspects of life. salt is even used in the bible to state the importance of the human creation from the heavenly father. Make your bed - “you search for something that can give you solace, that can motivate you to begin your day, that can be a sense of pride in ugly times.” Refer the bible with salt and the lord gives salt the ultimate…

This scientific experiment will entail the rate at which ice will melt with different types of salts that include, table salt, sea salt, and rock salt. Salt melts ice essentially because adding salt lowers the freezing point of water. Although we know that salt has the ability to melt ice, we are testing whether sea salt, table salt, or rock salt melts ice more efficiently by calculating the amount of time it takes to melt the ice. We will begin by placing the same quantity of each type of…

); storage code: White Store nitric acid stored alone away from other acids in a labeled, locked, corrosion resistant cabinet. 0.2 M nitric acid, (HN03); storage code: White Store bases in a labeled, locked, corrosion resistant cabinet. Lab-grade sodium…