Reactions Safety Reminder: Wear safety glasses and conduct experiment in a well-ventilated area. Day 1 Materials: Part I: steel wool (HEB‚ Target‚ Lowe’s‚ Home Depot) You can also try SOS pads. tweezers vinegar test tube (in your kit) water petri dish (in your kit) Part II: hydrogen peroxide small pieces of raw potato (yeast or beef liver may be substituted for the potato) small bowl Procedures: Part I: Reaction between iron and oxygen 1. Break off a small piece of steel wool and soak it
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constructed the noise cancelling compartment out by cutting the padding in order to hold a petri dish. I cut three whole in the padding and layered four pads to leave the empty space in the middle. I placed the plywood panels on the top and bottom and secured the bottom and left the top unsecured for access. I made 2 liters of agar and poured it evenly into 12 petridishes with an area of 18.096 cm2. Each Petri dish was inoculated with an inoculation tube using sanitation methods and intending to
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Group: rain water the copper is exposed to Materials 12 strips of copper pH meter (+ 0.01) Digital scale (+ 0.01) graduated cylinder (±0.05 mL) experimental setup diagram 60mL of rain water 60mL of 0.5 M HNO3 60mL of 1.0 M HNO3 60mL of 1.5 M HNO3 4 petri dishes Experimental Process 1.
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Materials: For week 1 and week 2 the following materials were used: 10 grams of fresh leaves (rose)‚ sandwich-type plastic bag‚ a scale‚ a blender‚ 100 mL of distilled water‚ folded cheesecloth‚ a funnel‚ one stock bottle‚ 3 pieces of filter paper‚ two Petri dishes‚ and 40 radish seeds. Methods: According to the Topics in Biology Laboratory Manuel‚ the experiment was conducted as follows: First we needed to collect fresh leaves from one plant species‚ and fill up a plastic sandwich bag‚ which we were
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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autosomal. To begin the lab‚ one must acquire a sample of flies to cross. These flies should be placed in a tube with an easily removable foam stopper. Use the flynap to knock out the fruit flies‚ and pour them out of the tube into a petri dish. Then place the petri dish on a stereomicroscope‚ and begin using a paintbrush to sort the flies by gender. Male flies have sex combs on their forelegs‚ and are usually smaller than the female flies. The females have pointed posteriors‚ do not have sex combs
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The instructor will provide TSA plates (Tryptic Soy Broth mixed with 15% agar‚ heated to sterilize media and melt agar then poured into a Petri dish) and a culture containing Escherichia coli and/or Bacillus subtilis and/or Staphylococcus aureus and/or Serratia marcescens. Isolation of bacteria using the streak plate technique: Label the bottom of a Petri dish (side containing the agar) (Why?) with your initials‚ date and lab section. Your instructor will provide you with a test tube containing
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Unit 7 Introduction In this piece of coursework‚ there are few amounts of ideas and experiments that I could achieved of which different products to test for my concluding idea. The type of bacteria that I am going to discuss and chosen is E-coli. I will also going to research the effectiveness of antibacterial cleaning products‚ for instance sanitizer. I will also‚ research which is the most effective product for the house hold and some other work places. Background Information What are
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Experiment on Metals Aim-To find out which of these metals will be most reactive with hydrochloric acid‚and plan an investigation to test it out.The Metals given:Calcium‚Aluminium‚Iron‚Magnesium and Zinc. Prediction-I predict that the metal will be the most reactive with hydrocholoric acid is calcium because calcium is in Group 2 which is the alkaline earth metals in the periodic table and because calcium is at the extreme left side of the periodic table and as you go across a period‚the element
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No changes occurred within the Nutrient agar. The MKL agar exhibited a color change with E. coli and the mixed culture. The agar changed from red to purple‚ and a noticeable border was present surrounding the colonies that exhibited growth on the dish. The ASH agar did not yield a color change. The Mannitol agar exhibited a change with S. aureus and the mixed culture‚ but no change with E. coli (Table 2). Table 2. Indication of color change within the four types of agar. E. coliS. aureusMixed
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