Fill the third test tube with approximately two millimeters of Ethanol. Dip the inoculation loop into the test tube containing the alcohol Hold the inoculation loop over the flames of the candle for just a second of time until all alcohol is combusted. Unscrew the lids of the other two test tubes, while still holding on to the inoculation loop. Dip the inoculation loop into the chicken broth and then into the saline solution. Close the test tube containing the chicken
Next, transfer the sample to a 50 mL beaker and mixes with distilled water, which gets by rinsing the crucible with its cover in 8mL, so the solution is generated. After that, put an aluminum wire into the beaker, and after a certain period of time the solution gains color. To finish the reaction, 5 drops of 6M of Hydrochloric acid is added into the beaker to clean the solution, which means that acid dissolves all salts of aluminum that is on the solution. After finishing the chemical process, collect and use the Butcher funnel to wash the cooper because it is going to be used to a vacuum filtration. After finishing the filtration, measure the weight of the sample and dry it.
Step 3: After, shell is removed, carefully remove egg from vinegar and place on a paper towel. Step 4: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 5: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 6: Record Measurements Step 7: Place an egg in a one of your 2 cups before placing egg name cup distilled water Step 8: Pour distilled water on top to cover the egg Step 9: Place plastic wrap on top of cup to cover the egg filled with distilled water Step 10: Now take your other egg from the vinegar used to take out shell. Step 11: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 12: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 13: Record measurements Step 14: Place the second egg in your second cup Step 15: Pour corn syrup on top of the egg to cover
Not only does it allow molecules to enter cells, but also removes waste products. Osmosis is the diffusion of water. This means that osmosis refers specifically to the movement of water across a semi-permeable membrane down a water concentration gradient. Therefore, completing this experiment will allow us to come to a conclusion as to how much a solute concentration gradient affects osmosis across semi-permeable membranes, and how we can apply what we have learnt to the world surrounding us. Relation to Semi-Permeable Membranes within the Context of our Experiment: In this experiment, we will explore the specific movement of
After the loop cooled down, the loop was usedd to obtain a sample of the unknown mixture. This done by inserting the loop in the test tube of the unknown mixture. The loop was now ready to begin streaking; the plate was divided into four quadrants. Streaking was initiated into the first quadrant using a side-to-side swipe method. After streaking into the first quadrant, place the loop through the flame for 3-5second in order to reduce the amount of bacteria
The Incredible Egg The purpose of this lab was to find out what would happen over time to weight of an egg after we scrubbed the eggshell off in a little spot. We then soaked it in water for 10 minutes, 30 minutes, 24 hours and measure how much the weight went up. Once we came back the next day we measured them after 24 hours. In the same day we put the syrup in the cup instead of water and we measured how much it weighed after 10 minutes, 30 minutes and 24 hours. As we did this with the water the weight of the egg went up because the water soaked into the egg and made it heavier.
As mentioned earlier, the egg’s mass changed prior to the substance it was soaked in. This experiment was able to show the effects of osmosis where the egg was both depleted and expanded due to the diffusion of the water molecules. The egg’s change in mass depended on whether the solution of the substance was either hypotonic, hypertonic, or isotonic.
Water purification by using nanomembranes can provide solution to their problem. DISCUSSION Desalination processes that are mostly being used for water purification includes Reverse Osmosis, and filtration through nanomembranes. Both these processes use pressure driven membrane technology which is employed at various configurations. Reverse Osmosis Pressure is used to drive the water through the membrane, leaving the salt behind. Desalination through reverse osmosis removes the salts from the water with the help of membrane.
Big Question Can eggs bounce in different types of liquid? Hypothesis We think that the egg in hot water will become a hard boiled egg so it will bounce,we also think that the egg in chunky milk will become more solid, we think that the vinegar will make the egg bounce Procedure Our procedure is... The first thing we would do is get our materials we need, then put our eggs in the liquids we got and wait 6 days with the egg in each liquid. Then we would take the egg out of the liquids and then try to bounce the egg. Materials Our materials are… ~ A cup of Hot water ~ A cup of Chunky milk ~ A cup of Vinegar ~ 4 Dozens of eggs ~ 48 plastic cups ~ Pair of plastic exam gloves ~A tub of clear
Part 3 - Putting the NaCl solutions over the shell-less eggs: Place each shell-less egg into a new plastic cup. Each solution will be placed in 3 clear plastic cups accordingly to the following: 1-3 water; 4-6 solution of NaCl 5%; 7-9 solution of NaCl 8%; 10-12 solution of NaCl 10% and 13-15 solution of NaCl 15%. Leave the shell-less eggs in the solutions overnight. Take the eggs out and rinse them with water and wipe them with a paper