Bunsen burner

My hypothesis is that each compound will produce a different color. For the procedure, we first took a wooden splint and placed it in distilled water. Then, we lit matches we received from Mr. Maloney, and turned on the gas which turned on the bunsen burner. We then took one compound from the front table. We took the wooden splint in the water, and scooped up a tiny bit of the substance and placed the whole thing in the middle of the flame. We then observed the color of the flame. The results…

Escherichia coli (E. coli) is a rod-shaped, gram negative bacteria that is part of the normal bacterial flora of the human intestine. These particular strains are not pathogenic, however other strains can cause food poisoning if consumed. E. coli’s entire genome has been sequenced and the genes it codes for are relatively well known.1 E. coli DNA is in the form of a plasmid which is circular DNA. Plasmids are easy to manipulate, self-replicating, stable, and applicable to various organisms due…

weighs 69.70g.Then I add 70 mL milk and put the flask back on the balance and weigh it again. Total to 138.679g. I calculate the mass of the milk in the flask; I subtracted 138.679g from 69.70g giving me the total sum of 68.979g.After I set up the Bunsen burner including iron clad, wire gauze ring stand and…

crucible and lid to ± 0.001 g. 6. Place the crucible on the clay triangle. Set the lid slightly off-center to allow air to enter but prevent product from escaping. 7. Place the Bunsen burner under the crucible, light it, and brush the bottom of the crucible with a gentle flame for 1 minute; then place the Bunsen burner under the crucible and heat strongly. 8. Heat until all the magnesium turns into a grey-white powder (probably around 10 minutes). 9. Stop heating and allow the crucible, lid and…

experiments included testing for all of the following ions; ammonium, halide, sulfate, carbonate, nitrate, and acetate. After comparing the results of these experiments we determined that our compound contained a halide. By using the flame test with a Bunsen Burner we also determined that our compound had a red colored flame leading us to our conclusion that the unknown…

become one of the most rapidly growing fields as explanations for how things work, or the technological progression allowing us to discover more. Two scientists who were at the foremost end of chemistry advancement during the mid 1800’s were Robert Bunsen and Gustav Kirchhoff. The two were research professors for the majority of their careers, working together to find some of the most influential…

In performing this test, it was found that salt #287 did not melt under the flame of the bunsen burner which had a temperature of 800 ºc. This indicates the melting point of the salt is above 800-degree celsius. This result remains consistent with the known melting point of Sodium chloride of 800.7-degree celsius. Using the result of this test,…

Effect of different cleaning products of the growth of K12 strain Escherichia Coli? Which household cleaning product (hydrogen peroxide, Pine-sol, Clorox Bleach, Mr Clean antibacterial liquid cleaner) is the best inhibitor of K12 Escherichia coli (E. coli) growth? The manipulated variable was the cleaning product or disinfectant on used of the Whatman antibiotic assay paper disc. The dependent variable is the zone of inhibition of the prokaryotic bacteria E. coli. In topic one IB requires that…

A. Heating Magnesium: This station consisted of magnesium, a slim, flexible, silver metal and a Bunsen burner. We used crucible tongs to hold the magnesium over the Bunsen burner until it began to ignite. When it first ignited, sparks were seen and the flame emitted a bright, white light. The flame spread across the magnesium and eventually turned it into a white, ashy substance. The combination of fire and magnesium caused a chemical change. This is evident as there were many signs of a…

point, Ca(NO3)2 boiling point, and the control boiling point. Observed and recorded results. Burn Test Obtained 0.5 mg of the unknown substance and 0.5 g of Ca(NO3)2. Grinded up both substances until they were a fine powder and started the bunsen burner. Placed a small amount of each powder on the microspatula and placed over the flame. Observed the color of the flame and recorded results. Nitrate Test Placed 1 mL of Ca(NO3)2 solution and 1 mL of the unknown substance solution in their…