Rotational rubbing of left thumb clasped in right palm and vice versa 8. Rotational rubbing, backwards and forwards with clasped fingers of right hand in left palm and vice versa 9. Rinse hands with water 10. Dry thoroughly with single use towel 11. Use towel off faucet Instructions for proper diaper-changing technique 1.
Use your 4 markers to draw a different colored dot on each of the pencil marks on the paper strip. Allow the markers ink to dry, and then go back recolor each dot. 5. Prepare the saltwater mixture by mixing 1/8 teaspoon of salt and three cups of water in a clean 2-liter bottle. Stir or shake the solution until it is dissolved.
With a rod (spreader) that was dip in ethanol and then place under the busen burner in order to neutralize it; we spread the bacteria on every surface area of the petri dish. We wanted approximately 10 minutes for the bacteria to dry off, before applying the antibiotics. The three antibiotics were place in the center of the quadrants and a control was also place in the fourth quadrants carefully. Once this was done we close the petri dish and sealed it with parafilm for more protection for the environment of the bacteria. The two petri dish that contained E. coli and S. Marscensen were placed upside down and allowed the growth of the bacteria to interact with the antibiotics for a week.
Once the chemicals had been organized I then place 2 drops of the first chemical and 2 drops of the second chemical into the allotted well. Once 2 drops of each chemical were placed in the well I stirred the mixture with a toothpick and observed the mixture. The observations of the various combinations were then noted. The following combinations took place in the experiment. NaHCO3 (sodium bicarbonate - baking soda) and HCl (hydrochloric acid).
In order to clean this I would collect cleaning equipment from the cleaner’s cupboard and spray the bath with appropriate cleaning agents and using a clean cloth and after cleaning the bath I would rinse this thoroughly with hot water to remove any residue from the bath. I would then proceed to mop the floor and apply a wet floor sign so to make the next user aware the floor may be wet. 2. Describe the roles and
Solutions have been made from samples of each container, and labelled A, B, C, and D. Use chemical tests to identify each solution. Be very careful not to cross contaminate the solutions! You should describe what you did at each stage in order to identify the compounds. Describe how you would test a sample of food to check for the presence of lipids, such as oils or fats. P5 First I collected four test tubes; in each test tube I purred the solution that has been labelled A, B, C, and D in the container.
Stop two inches from the brim to allow for stirring the water and adding ingredients without overflowing. With one hand, grab the top of the Kool-Aid package and give it a gentle shake to move all of the powder to the bottom. Keeping your hand on the top of the package and grabbing the rest of the package with your other hand, slowly pull with the hand on top to tear about a centimeter off the package. Pour the contents of the package in the pitcher of water. Using the measuring cup, add two cup of confectioner’s sugar into the pitcher as well.
Then the same was done with each of the other substances. Weezie was washed off with water after the baking soda. Next, the tray was washed and dried. Then, using the spatula again a small amount of orange juice, molasses, veggie oil, and vinegar was placed in each corner of the dissecting tray. Weezie was placed near each substance again to be observed.
After all the acid has been completely added and the reaction has stopped, use a pipette to add a few extra drops of acid into the beaker until the reaction stops. 7. Place the beaker on a hot plate and heat on a high setting to boil off the water. WARNING: THERE WILL BE A SMALL AMOUNT OF HYDROCHLORIC ACID BOILING OF THE MIXTURE. DO NOT PLACE YOUR FACE DIRECTLY ABOVE THE BEAKER.
-Get six wooden splints that have been soaked in water. -Place them in the beaker half filled with water to continue soaking at your lab station. -Fill a second 250-mL beaker about half-full with tap water. Label this beaker “rinse water.” -Light the Bunsen burner. -Take one of the wooden splints and dip the soaked end in one of the metallic salts,