The purpose of washing the test tubes thoroughly is so the chemicals don’t cross contaminate and affect the outcome of another section of the lab. Hypothesis: 1. If a substance contains lipids then when rubbed onto a paper bag a transparent or opaque spot will appear. 2. Is a substance contains starches then when iodine solution is added to the substance it will change from yellow-brown to blue-black.
Good personal hyginene helps to prevent or develop infections, illness or bad odours, it also helps with confidence, motivation, body image and self esteem. 2 Describe the effects of poor personal hygiene on health and well being People have to maintain a good standard of hygiene when people do not it affects how their are feeling. Hair - Can become greasy, unkept, smelly and matterd Skin - Can be come dry and start body odours. Because of a build up of sweat in the glands within the skin bacteria increases. Teeth- Another effect of poor hygiene is bad breath which is lack of brushing this allows bacteria to grow or having food in between teeth can start to rot over time so leading to bad breath.
Date................... Assessor Name.................................... Date.................. IV Name............................................... Date.................. UNIT NO. | LEARNING OUTCOME | Question | UNIT NO. | LEARNING OUTCOME | 264 | 2.2, 3.1, 6.4 | What are the main points of the policies and procedures for hand washing?Expose forearms – Bare below the elbowSingle band ringNo bracelets or watchesNails clean and of reasonable lengthNo false nails or nail polishWash with soap and water to remove dirt and micro organisms, or apply alcohol rubWash hands when visibly soiled, contaminated with blood or bodily fluids, after using the toilet, before procedures and before eating.
1A-Water/MSG: When shaken the water and MSG they mostly dissolve creating an orange gold color, the substance foams at the top from the vigorous shaking action yet still some MSG residue remains at the bottom of the test tube, it was unclear if the reason was because we did not mix it enough or rather we added too much MSG to the amount of water given. 1A-Alcahol/MSG: These two substances barely mix together leaving a transparent yellow tint to the alcohol as well as MSG that was unable to dissolve at the bottom of the test tube. We concluded that this residue was unable to be dissolved in this liquid because the amount of MSG remaining in the bottom of the test tube was around the same amount that was originally placed into the alcohol. 1B- Alcohol/Vegetable Oil: Created a foamy top layer, was semi unclear but as to the best of my observations the alcohol nearly completely dissolved the oil, leaving a foggy appearance to the once clear
Royte’s excerpt makes many views of the effects of tap water and the different types of problems associated with drinking it. In many areas, they say it is okay to drink the tap water but there are a few instances where the water needs to be filtered. She explains the different types of bacteria’s in tap water around the United States but she does tell how the bottled water companies do not answer to the public and how they are being untruthful about their purification of water. Although she believes they are untruthful, she provides little evidence of that. She is being quite vague about her conclusion that water bottles are not the best source of water.
Clothing precaution, heating safety, hygiene care, proper waste disposal, chemical safety, eye safety, electrical safety. 4. If you don’t wash a test tube thoroughly, then it might affect the results the next time it’s used. 5. You shouldn’t put it back in the original container because it might contaminate the rest of it.
Hands are in constant contact with both the environment and the face, providing easy transportation from the surface of an infected object or person to our nose or mouth. Washing hands with clean running water and soap helps reduce the amount of bacteria on the skin, lessening the chance of contracting diseases. 2. Be able to support individuals to maintain personal hygiene. 2.1 Support an individual to understand factors that contribute to good personal hygiene.
10), presumably to reduce the amount of water needed, suggesting that the piped systemwas still functioning but could not be relied on. The step was faced with waterproof plaster and painted blue to match the rest of the pool. The overflow drain of the pool also remained. Such overflow mechanisms indicate that running water in the pool was provided by aqueduct water.59 The changes to the pool signal that at first there was an expectation that the pre-earthquake system could be retained. Presumablyduring the 60s such hopes were frustrated.
SCI 207 NEW WEEK 2 LAB 2 WATER QUALITY AND CONTAMINATION http://www.homeworkproviders.com/shop/sci-207-new-week-2-lab-2-water-quality-and-contamination/ Lab 2 – Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell, Color, Etc.) Beaker Observations 1 To me this is just water, there is no smell. 2 As you pour the oil in the water the oil started to bubble at the top. When stirring the oil turned into smaller bubbles. It looks as if the oil has placed a thick line of film on the water 3 After pouring the vinegar in the water the only change I noticed was that the water seemed to be a shade darker when added it.
Which parts of the hands are most frequently missed during hand washing? a) Fingertips & Nails b) Web part in between fingers c) Thumbs 2. Why should you not use bars of soap or linen towels? To prevent harmful bacteria and micro- organisms getting trapped on towels and in the cracks of soap bars and breeding. 3.