HSC Chemistry First Hand Investigation 2009 Scientific Report Aim: To carry out a fist hand experiment in the extraction of red cabbage pigment‚ use this extracted pigment to standardize against know pH’s‚ test 5 household items to determine the possible pH of these items by using the standardization and assess the pigment’s ability to be used as a Universal Indicator. Risk Assessment: When dealing with fire‚ the Bunsen burner should always be switched to the safety flame before lighting.
Premium PH indicator Laboratory glassware Rainbow
MATERIALS 1.- Graduated cylinder 2.- Hydrogen peroxide 3.- Dish detergent 4.-Food coloring 5.-Potassium iodide 6.-Safety Glasses 7.- Lab smock PROCEDURE 1.-Put on your safety glasses and lab smock for your own safety. 2.-Pour the hydrogen peroxide into the graduated cylinder. 3.- Add 5 drops of food coloring to the hydrogen peroxide. 4.-Add the dish detergent to the peroxide in the cylinder. 5.- Then you pour the potassium iodide to the mixture and quicky back off. o you don’t want
Premium Laboratory glassware Water Laboratory equipment
1. Put your safety goggles and lab coat on. 2. Gather all the necessary materials in order to conduct this experiment such as boiled water‚ distilled water‚ calcium chloride‚ distilled water‚ glycerin‚ test tubes‚ nails‚ test tube rack‚ graduated cylinders‚ tongs‚ scoopula‚ erasable marker and parafilm. 3. With the erasable marker‚ label the ten test tubes from 1 to 10. 4. For Test Tube 1‚ drop an iron nail in it without adding anything else. Place the test tube into the to-be-heated rack (50⁰F)
Premium Water Laboratory equipment Chemistry
The experiment was carried out in a Trent University greenhouse for a 14-day period. Ten small glass jars were labelled according to their treatment type (warm or room temperature). Room temperature jars were categorized as 1.1‚1.2‚1.3‚1.4‚ and 1.5‚ then the warm temperature jars were 2.1‚2.2‚2.3‚2.4‚ and 2.5. Jars were filled with a 100ml of federalized water‚ and a mark at the 100ml was made as indication to ensure the correct amount of water was given if the jars needed to be topped up. With a
Premium Water Laboratory glassware Ethanol
6 – 150 mL beakers were set up and a stir bar placed in each beaker. Each beaker was labeled with DI water‚ or the pH buffer that was going to be put in the beaker. 50 mL of each of the 5 assigned pH buffers and DI water were obtained using a graduated cylinder and placed in the corresponding beaker. Each of the beakers containing the pH buffer and DI water were placed on the stir plate and the stir plate turned on. A sample of salicylic acid was obtained in a weigh boat and taken back to the lab
Premium Water Laboratory glassware Chemistry
3.0 Introduction The methodology involves five main steps; the collection of hair samples‚ the distribution of questionnaires‚ the washing of samples‚ the digestion of the samples‚ and the analysis of metal contents in the hair. 3.1 Materials and reagents used during the experiment The apparatus and chemicals that were used in the previously mentioned experimental steps are summarised in table 3.0. Steps Materials Reagents Collection of hair samples 1. Stainless Steel Scissors 2. Plastic bags
Premium Erlenmeyer flask Laboratory glassware Solvent
classroom will contain all the essential equipment‚ tools‚ resources‚ and chemicals needed for the learning and hands-on experience that the AP Chemistry students will need. In order to create a professional laboratory atmosphere similar to industrial labs these students may work in‚ all the glassware‚ safety materials‚ and provided chemicals will be surrounding the students. The kidney tables are used for groups of three students. These groups will be used for several assessments‚ lab exercises‚ class
Premium Chemistry Maslow's hierarchy of needs Laboratory
INCIDENT REPORT INSTRUCTIONS Northwestern University Vice President for Research University Safety Committees Office for Research Safety ***A sample completed form is appended to these instructions.*** When to Submit an Incident report An incident report must be delivered to the Office for Research Safety within five days of the incident. Reports are reviewed by the Chemical and Biological Safety Committee‚ or the Radiation Safety Committee. An incident is defined as any unplanned and
Premium Personal protective equipment Laboratory Emergency management
Safety Concerns in the Laboratory Safety goggles must be warn at all times during a lab session. This is very important because they protect your eyes from harmful matter such as chemicals‚ glass‚ and fumes. It is very important to note that they must be goggles and not glasses. Safety glasses may protect the eyes from flying debris and splashes but may not protect the eyes from gas fumes or splashes from underneath. Also‚ wearing contact lenses in a chemical laboratory without proper coverage
Premium Chemistry Laboratory Left-wing politics
Experiment 4 - Observations of chemical change Data Table 1: Reactions Expected | | Well #/ Question | Chemicals | Reaction | | | | A | NaHCO3 – CO2 | It creates bubbles‚ it keeps uncolored | B | HCl and BTB | It changes to a strong yellow liquid | C | NH3 and BTB | It changes to blue liquid | D | HCl and blue dye | It changes green. | E | Blue dye and NaOCI | it first is blue and after add the HCl creates several colors‚ which are yellow‚ blue and green | F | NaOCl and KI
Free Acid Chemistry Purple