S&S Ch3 Written Assignment

What is the purpose of Safety Data Sheets? Why are these important when handling common food service chemicals? What information/components are generally included? How do Safety Data Sheets vary?

what types of content that we can discuss on this topic? "non-stick cooking utensils- are they safe for us"

Answer the following questions.  1. What are the benefits of green chemistry?2. How can non-beneficial chemical reactions be minimized and stopped?3. Discuss how chemical engineering applies the concept of limiting reagent and excess reagent in a reaction.

If uncertain as to how to dispose a chemical, dumping it to the sink followed by copious amount of water is a safe disposal procedure   true or false

Subparts 4-6

Sub parts 7-10

Different type of methods used in household contaminated wastewater purification

Part A: The graphic shows an organic molecule and highlights a functional group that is bonded to it. This functional group is an example of ______ group. Part B: select which Characteristic this functional group impacts on the molecule. A. Forms disulfide bonds B. Nonpolar

Which activities are likely to cause contamination of stock chemicals in the laboratory? pouring out chemicals from the stock container into another container returning unused stock chemicals to their original container at the end of an experiment swirling the container of stock chemicals to ensure that the contents are thoroughly mixed spilling some of the chemicals on the lab bench and then returning them to the original container inserting a dirty pipet into a container of stock chemicals

Concentrated sulphuric acid is used in this experiment to O help the crystal growth of acetylsalicylic acid speed up the reaction of aspirin synthesis increase the activation energy O avoid impurities getting trapped into the aspirin crystals P Type here to search

Discuss about this topic non-stick cooking utensils- are they safe for us

1. What are fibers and where are they found? How could forensic scientists use fibers to solve a crime?   2. Define the word probative. What is the probative value of a fiber in a forensic investigation?     3. Describe steps you would take from collecting a fiber(s) at a crime scene to performing an analysis to determine its identity.     4.  Which of the 6 fiber types you observed are natural? Which are man-made?     5.  Are fibers classified or individualized? Why?

7. Statement 1: All food additives are carcinogenic. Statement 2: Food additives must be avoided as much as possible. A. True, False B. True, True C. False, False D. False, True 8. How do thickeners improve a food product? A. They prevent spoilage due to oxygenation B. They increase the viscosity of a product C. They preserve the flavor of a product D. They keep food from drying out. _9. It makes the food thicker by keeping oil and water mixed together. A. Emulsifiers C. Humectants B. Flavor Enhancer D. Antioxidants

How is personal risk analysis done when working with hazardous chemicals?Explain step by step

Which of the following is true about heavy metals and their environmental impact? a. Coffee and tea waste could be viable options to rid water of heavy metals. b. Based on the study shown in class, coffee is definitively the best option to rid heavy metals from water. c. Coffee, tea and caffeine all remove heavy metals from contaminated water through absorption. d. Copper is the most prevalent metal found in drinking water that can cause harm to the environment and humans. e. Copper and zinc concentrations in drinking water are significantly higher in areas with human activity.

Chemicals usually have both physical and health hazard. Identify the following if it b hazard. Health Hazard Mutagen Physical Hazard Barbeque have this benzo (a] pyrene that can cause cancer Physical Hazard Fire Toxins Physical Hazard Chemical burn Physical Hazard Explosives Large amount of smoke being inhaled Physical Hazard Spill of caustic soda in your skin Physical Hazard Health Hazerd Dlog

Dissolution Distilled H20 Concentration 0.01 M HCI Concentration (mg/ml) Time Total amount A Total amount A (mg/ml) (mg) (mg) 5 0.16 0.1 10 0.24 0.18 15 0.35 0.25 20 0.48 0.34 25 0.58 0.4 30 0.67 0.5 1. Plot the given data on an ordinary paper and find the slope for each line then calculate the IDR constant for aspirin in the two dissolution media, water and HCI. NOTE: Slope of the calibration curve = 1.0 (mg/ml and saturation solubility of salicylic acid is equal to 2.0 gm/L.

Sample Mixture Alcohol Phase of Components Liquid + liquid Air Carbonated drink (coke) Smoke Salty water Alloys such as brass (used for coins) Spray deodorant vinegar

Choose your answer on the words/terms written inside the box. Note: answers may repeat Preservatives Nitrites Food additives Chemical Preservatives Benzoic acid Sweeteners Sorbates salt Sodium nitrites Natural Preservatives Benzoates 1. Substance that improves the quality and safety of food. 2. Chemical that is added to food or beverages to prevent microbial growth or to avoid spoilage. 3. These act by killing bacteria and other microorganisms present in foods especially in acidic conditions. 4. Type of food preservatives that kills disease causing bacteria. _5. An antimicrobial agent preservative that inhibits the growth of molds, yeast and bacteria in food. _6. A traditional and natural preservative. 7. Two main types of preservatives. 8 9. Responsible for the pink color of hot dogs and hams 10. These preservatives are used in salad dressings and pickles. 11. Any substance added to food to increase the shelf value of food for storage. 12. Preservatives used in baked goods, canned…

Which of the following safety equipment should be utilized to protect a personnel from directly inhaling toxic vapors while observing chemical reactions? fume hood O HEPA filter O air circulator surgical mask

Which of the following statements is not true?     No food or drink, including water, is allowed in laboratory     It is okay to taste a chemical     Read and re-read labels on containers of chemicals before opening them     Dispose the chemical waste to appropriate waste container

Histology stains that are used to create microscopic images originally came from the industry. clothing cosmetics healthcare automotive food

Information about a Water Sampler

How do we prevent contamination of chemicals? Answer in 10 sentences. Thank you

What is the purpose of the chemical fume hood? storage for glassware provide a safe place to work with chemical that produce harmful vapors O long term storage of hazardous chemicals O remove harmful vapors created at the lab benches hp