Chemistry Case Study We are the research chemist at Valentines metal extraction company. We have received the following letter: Dear Sirs, We have just discovered a blue mineral which we believe contains a copper compound. Could you please analyse the sample we have enclosed to see if there is any copper in it and see if it can be extracted. Yours Sincerely Freddie Jones I am sure that there is copper in the compound as it is a blue colour. All compounds that are blue or green contain copper in them. I will firstly need to consider methods of trying to separate the copper, from the other substance in the compound. I will firstly try and heat the compound and observe what happens. Apparatus The equipment I will use to do this experiment is: Ø Triangle Clay Ø Tripod Ø Crucible Ø Bunsen Burner Ø Safety Mat Safety The safety aspects which I will need to consider while carrying out this experiment are: Ø I will need to wear goggles to prevent the chemicals from getting in contact with my eyes Ø I will also need to wear a lab coat, to prevent any chemicals from getting onto my clothes. Method I will firstly put a sample of the compound in a crucible. I will put approximately 4 spatulas of the compound into the crucible. I will then place the crucible on a clay triangle and place the clay triangle on the tripod. After this I will place the Bunsen burner on a safety mat and put it directly under the tripod with the crucible on top of it. I will then light the Bunsen burner making sure it is on the safety flame, and then put it on the blue flame, and heat the compound. I will then observe the compound to see what happens to it, and record my findings. Results I observed the crucible and I saw that the powder immediately began to
... for various anions. Reactivity reactions and quantitative analysis comparing the unknown compound and calcium nitrate verified this hypothesis. Calcium nitrate was most safely and effectively synthesized by combining solutions of calcium chloride and lead nitrate. The MSDS data showed that the compound is a strong oxidizer but is not very toxic. Besides following standard laboratory safety measures, care should also be taken to ensure the compound is not exposed to heat, shock, or incompatible materials as listed on the MSDS that may cause fire or explosion.
- If all of the options were explored, and patient is given antibiotics and is treated without any pain or suffering than the treatment identifies with the ethnical principles of autonomy, non-maleficence, and veracity. In turn, Mrs. Dawson will be happy with the outcome of the procedure.
Many hazards are associated with chemicals in this lab. Most of the chemicals used are irritating when they come in contact with your eyes, skin, or body tissues. Some chemicals are more dangerous, and can be corrosive to your body tissues. In one case, a chemical, when combined with any acids, can produce a toxic gas. In order to protect against these hazards, one must wear safety goggles throughout the entire lab as well as when cleaning up after the lab. Also, one should avoid contact with the chemicals and use extreme caution when handling each of the
This paper will discuss a case study of Pritesh, a 26 years old man who is transferred from the emergency department (ED) to the high dependency unit (HDU) with the developing of a tension pneumothorax. Initially, a general description of the patient’s chief complaint which is tension pneumothorax will be introduced, following by assessments of the patient’s need. The paper will focus on the discussion of nursing care and management for the patient, and a brief summary and evaluation of the care will be given. Lastly, a conclusion of what author has learned from this case study will be present.
Case introduction: A 19 year-old gentlemen, SS, presented to station 20N through the emergency department, following what was described by friends and family as “bizarre behavior.” SS had recently begun college at a local liberal arts school. He had done well during the first semester, but began to struggle academically during the second semester. Family attributed the decline in academic success to an increase in class size, which made SS uncomfortable. Several weeks prior to hospital admission, SS became increasingly isolated, spending the majority of his time in the dorm room and less time in class. Friends and roommates reported that SS was exhibiting bizarre behavior, often confiding in friends that he was being “spied on” by others and that people around him could “read his thoughts.” SS also endorsed a strange delusion in which those around him would blink simultaneously as a form of communication. All of the aforementioned events became overly distressing to SS and his family, so they sought medical help. SS had a limited psychiatric history for which he had seen a psychiatrist. The psychiatrist had put him on an anti-psychotic medication some months prior, but SS self-discontinued the medication after just a several week trial. As a result of the above, and a lack of explanation regarding the past psychiatric referral, the events were described as “first-episode psychosis.” Discussion regarding the diagnostic work-up followed.
· Wear the lab coat all the time in case the acid spills on you.
The purpose of this lab is to determine the empirical formula of copper oxide (CuxOy) through a single-displacement reaction that extracts the copper (Cu) from the original compound. In order to do this, hydrochloric acid (HCl) was mixed in with solid CuxOy; the mixture was stirred until the CuxOy was totally dissolved in the solvent. Zinc (Zn) was then added to the solution as a way to enact a single displacement reaction in which Cu begin to form on the Zn; the Cu gets knocked off the Zn through gentle stirring. To isolate the Cu, the supernatant liquid was decanted and the Cu was then washed with first water then second, isopropyl alcohol. Once done, the hydrated Cu is transferred onto an evaporating dish where it was heated multiple times
Every chemical element or compound have specific properties that make them different than the other. However, these properties help us to understand every element or compound in which they can be used and how we can deal with them. These properties can be chemical properties which are defined as "that property must lead to a change in the substances ' chemical structure", such as heat of combustion and flammability ("Physical and Chemical…"). Also, these properties can be physical properties which are defined as the properties "that can be measured or observed without changing the chemical nature of the substance", such as mass, volume, boiling and freezing points ("Physical and Chemical…"). These two properties are related to each other. For
The purpose of this lab is to stay safe no matter what you're doing in
...many steps involved in treating it successfully. Long-sleeved clothing should be worn. Nitrile or super nitrile gloves should be worn and safety glasses, googles or a face shield should be worn. Barrier cream should be applied on hands prior to use. One other person should be present in the laboratory. When not in use, keep containers closed and in an upright position. Also when not in use, containers with hydrogen peroxide should be kept away from sources of heat including sunlight and Bunsen burners. Keep combustible materials away from hydrogen peroxide. Prevent build-up of mists or vapours in the atmosphere. Ensure a supply of water is readily available. Maintain a high level of personal hygiene when using this product, by always washing hands before eating, drinking, smoking or using toilet facilities. It is advisable to apply a moisturiser after washing hands.
sure that I take the lid off of the burner as late as possible, only
...y, and it is important that care is taken to ensure bodily fluids, blood, excretions, etc. are not brought into contact with skin, mucous membranes, clothing, and the treatment area4. Additionally, all reusable equipment should be sterilized before reuse1,4.
The procedure for this experiment can be found in Inorganic Chemistry Lab Manual prepared by Dr. Virgil Payne.
Investigationg of Chemical and Physical Changes Why I am conducting this experiment? In order to learn how to recognize chemical and physical changes, I have to carry out this experiment to see different chemical and physical changes of different substance. How can we recognize physical changes and chemical changes? -----------------------------------------------------------
For centuries, many scientists and researchers have pondered on the idea of combining two or more substances together to create something new. These explorations have led to the idea of what kind of reactions would occur when diverse elements are combined. This is a concept known as chemistry, a part of science that corresponds with how matter is created from different properties and the process it goes through to create a new substance. Chemistry is a scientific concept that is used in everyday life and is a crucial part in the development of new technology and substances that allow today’s quality of life. The use of chemistry branches off into many different routes, including medical related fields, agriculture, and even in weapons of