6- Place only the edge of the Q-tip at the top the Flame. 7- Remove it when you see the of light being given off to avoid burning the Q-tip. 8- Clean up procedure: Discard used Q-tips to the bin, cover back compounds and put them up in a safe place, pour away distilled water in the sink, disconnect the Bunsen burner and clean it if stained,clean the lab test surroundings with paper towel to ensure no stain is left, wash your hands remove your goggles only when all equipments have been placed in safe places. Compound | Flame Colour Observation | 1 LiNO3
Report all broken glassware to the teacher and then place it in the "broken glassware" crock. 9. Ensure that you understand the proper safety procedures to be followed before attempting any experiment. 10. Wear safety equipment when doing a lab.
We were dealing with bacteria that has the ability to be harmful and to avoid illness/sickness we need to thoroughly wash our hands and be careful around the bacteria. Another precaution to take was to not cough into or put any bacteria from our bodies into the agar plate. Those bacteria could be extremely dangerous and shouldn’t be cultivated. Observations Located on final page(s) Application Questions 1. The purpose of heating the agar plates in the autoclave prior to inoculating them with microorganisms was to make sure that the lab results were exact.
Procedure: Weigh out the mixture, and then use different techniques to separate them from each other. Using the magnet to separate out iron filings, boiling the substance to separate out the sand, and filtration paper to separate the salt and benzoic acid. Once substances are separated and dried, weigh them out to receive a total amount. III. Experimental Data: The original weight of the mixture before separation was 4.6g.
Title: Separation of a Mixture of Solids Purpose: To learn about separating solids and how this happens. By separating the solids one will be able to tell the difference between a mixture and a pure substance. Procedure: Four main steps. Separating the iron from the mixture with a magnet. Separate the sand by boiling water and pouring the water off, then move on to separating the Benzoic acid using filter paper.
· Broth culture of E. coli · Tubes of sterile nutrient broth · Inoculating loop · Bunsen burner · disinfectant Procedure 1. Disinfect the work surface by spraying it down with a disinfectant and then wipe with paper towel 2. Light Bunsen burner 3. Sterilize inoculating loop by holding it over the flame of the Bunsen burner until the tip becomes bright red. 4.
Professor Campbell Edison State Child Safety Plan It is the responsibility of the instructor to ensure that all areas of the classroom are safe for the children at all times. There should be no fire hazards in front of electrical sources, or heating sources. The room should be free of debris and toys to ensure a safe path to exit the classroom in case of a fire. All toys and projects should be used in the designated areas and cleaned up after use. All of the fire exits should have a minimum of three feet of clear space to easily gain access to the escape route.
Graduated cylinder 8. Calculator 9. Wash bottle Procedure: To commence, first I gathered all the material needed to keep from being too messy with the experiment. Next I went to collect my unknown liquid and metal since the material and purpose was to find the mass and volume of them and located their place of origin from the data collected. Once all the equipment has be gather, step one was to clean the flask because a dirty flask might have an effect on the precise mass of it.
Toxic. Toxic. Safety in the Science Classroom For each of the following safety rules, give one GOOD reason why we have that safety rule. a) Never begin an experiment or lab without your teacher’s permission. b) Keep your safety goggles on as long as there are any chemicals being used in the lab, even if you yourself are finished.
In order to remove the iron filings I will use the iron bar since it the composition of iron will be picked up by the magnet. Then I will bring the water to a boil in order to only remove the sand. After, I will use the ice bath to remove the benzoic acid. After removing all other solids I will be left with only the sodium chloride in the water. Results: Please see attached the final results and questions to go with Lab #3.