Discussion Questions 1. Is a flame test a good way of distinguishing (telling the difference) between different solutions? Discuss your answer. A flame test can be a good way of distinguishing between different solutions because each element will produce a different colour. Therefore, we are able to tell the difference between these certain solutions. For instance, when copper nitrate interacted with the flame, it produced a pale green colour while the other solutions created a different colour
purpose of this experiment is to become familiar with metal and nonmetal ions and with tests to determine the presence or absence of these important ions as well as to estimate approximate amounts. This experiment is divided into three sections: cations (six tests), anions (four tests), and identification of an unknown salt. For Fe+3 (Iron) test, place about 2 mL of 5% iron(III) chloride (FeCl3) solution in a test tube and add 10% ammonium thiocyanate (NH4SCN) solution until a deep red color appears
completing a flame test and a precipitate test? In this experiment we will work out two different unknown solutions using a flame test and a precipitate test. A flame test is a procedure you use in chemistry, predominantly with a Bunsen burner, to detect certain elements, based on their emission of colour that they give off. The colour of the flame will depend on what substance (or solution) you are using during the experiment. It is different with a precipitate test because a precipitate test, usually
purpose of this experiment was to use qualitative analysis methods to identify the metal nitrate salts that were present in an unknown solution for parts A and B. In part C, a third method, the cation flame tests, was used to identify cation solutions based on the color that was emitted by the flame. In parts A and B, the results were the presence of the lead cation and the barium cation. Lead was identified in part a during step six when the solution turned cloudy and very yellow, indicating the
Ananth Venkatachalam Michael R. Nelson A.P Chemistry September 22, 2015 Flame Test Lab Partners: Sophia Taggart and Elena Freeman Purpose The purpose of this lab was to understand the relationship between emission spectra and atomic structure using small samples of 7 chloride salts of different metals. Emission spectra(or line spectra) is a collection of wavelengths representing different energies. Electrons in an atom occupy different energy levels and are in the ground state when they are at a
characteristic flame colors that various cations produced. First, the presence of either lead or silver was confirmed by testing a precipitate obtained through centrifugation of the unknown solution. Then, the presence of either barium or calcium was confirmed in the liquid decanted during the previous test. These first two tests were composed of various reactions that created an insoluble salt of the cation being tested, which settled down as a precipitate. Finally, cation flame tests were performed
identifies its quality. It can be considered as a branch of chemistry. One which is limited to identification of a singular or group of elements, ions, or compounds in a sample. It is, nearly, always applied when in need of performing an experiment, test, etc…since it is usually the qualitative analysis which is performed prior to the quantitative analysis (but can be performed together). The techniques or methods employed for such identification vary in complexity and are dependent on the nature and/or
was thin and easily bent or twisted. It had a metallic surface and was brittle. It was silver in color. A flame from a Bunsen burner was held to the Mg, and it ignited, giving off a brilliant white light. Looking directly into the light resulted in temporary blindness, which would explain the warning on the procedures that strongly suggested not looking directly into the light. After the flame had extinguished itself due to lack of fuel, the Mg had turned from a metallic strip to an off-white powder
Ethanol, Paraffin, Wax. Method (Preliminary test): first of all, I will make sure I take all of the safety precautions, I.e. tie back long hair, use goggles and make sure the room is well ventilated. Secondly I will set out the apparatus and get all the equipment from the list (shown on the previous page). Using the measuring cylinder, I will put 20cm3 of distilled water into a boiling tube, and take the starting temperature. In order to make this a fair test I will burn the fuel for one minute only
thermometer * A clamp * A Bunsen burner * A stop clock Method ====== The first step was to carry out some preliminary tests to establish the best set up for our apparatus. To gain reliable results we needed a temperature rise of 50 degrees centigrade in the quickest time possible. Using the Propanol burner with different volumes of water we tested the flame at varying distances under the calorimeter measured from the work surface. Our results are set out below: Time (mins) Height
Sophie the self confidence she needs to feel good about herself and the strength to bravely admit who her abuser is. Each member of the group "wrote the names of [their] abusers in a pieces on a paper, raised it over a candle, and watched as the flames consumed it" (203). As Sophie got stronger, she no longer felt guilty about burning her mother's name. Through this procedure, Sophie is on...
blood tests." This is in such a tone, that it is suggesting that a higher being is speaking, and through references later in the poem, it seems likely that the narrator is a classic Greek god. Pattersonmentions "horoscopes" and "blood tests". These are both methods that humans try in vain to predict the future. Blood tests have connotations of illness, which becomes relevant later in the poem. "Even if the plane lands you safely, why should you not return to your home in flames or ruins
calorimeter. I will use a measuring cylinder to measure out 100cm3 into the copper calorimeter. I will light my Flame, which will be 5cm under the calorimeter. I will use my thermometer to determine the temperature and then go up to 60°c because that is how much I will change the temperature by. When the water has risen to 60°c I will then put the lid on the spirit burner to extinguish the flame and then I will weigh the spirit burner again. By taking the new weight from the original weight I can then
be working within a group performing a commonly used test that is designed to determine whether or not an isolated organism is able to be treated using a specific antimicrobial drug. The procedure is called sensitivity testing. This testing method allows clinicians to obtain information needed in order to make an informed and concise decision in reference to the antimicrobial drug usage. Methods and Materials Materials being used in this test include: • 6 Mueller-Hinton agar plates • 14
analyze the razor: it's sterile, machine precise metal, cutting edge. It is more beautiful than anything nature could produce. Holding it with my right index finger and thumb, I place it's razor edge upon my left wrist. It glistens in the candles' flames. I stare as the shadows of the razor dance like ghosts on my forearm. I apply pressure down on the blade until the skin depresses under the metallic edge. Slowly I apply more pressure. My skin separates beneath the razor edge and the blade sinks
The Future of Cyborgs Terminator and Bladerunner, portrayed cyborgs or cybernetic organisms as creatures of destruction. Are they really as horrible as the movies make them out to be? They can be more useful than perceived; it is necessary to first perfect the technology involved in creating and operating them. In this paper, I will describe how these cyborgs work and how they are portrayed in the movies. Furthermore, I will explain the helpful ways that they are expected to perform in the future
human existence since our humble origins. It is our curious nature and ever present ingenuity that leads us to create technological wonders of perplexing magnitude. As the first Neanderthal man sharpened a spear and tempered it in lightning born flames he sealed man-kinds future; a future as certain as our past. The pendulum of human dominance started its undulation and science was conceived to replace the ignorance of our times of yore. With our undying fortitude our achievements soared to the
NOW, COUNTING FROM TEN TO ONE, RELEASE THEM SLOWLY, YOU WILL FIND THEM VERY RELAXED. NOW, LOOK AT THE CANDLE, AS YOU LOOK AT IT, WITH EVERY BREATH AND PASSING MOMEMENT, YOU ARE FEELING INCREASINGLY MORE AND MORE PEACEFUL AND RELAXED. THE CANDLES FLAME IS PEACEFUL AND BRIGHT. AS YOU LOOK AT IT I WILL COUNT FROM 100 DOWN, AS A COUNT, YOUR EYES WILL BECOME MORE AND MORE RELAXED, GETTING MORE AND MORE TIRED WITH EACH PASSING MOMENT." NOW, COUNT DOWN FROM 100, ABOUT EVERY 10 NUMBERS SAY "WHEN
of "Pray for us, pray for us, PRAY FOR US"! that got faster and more desperate as time pasted. Scenes like this sprang up nationwide with new sightings everyday. Everyone was talking about it at the pub, church or school and the media fanned the flames even more with daily coverage. Each person you spoke to who believed it was a true miracle, claimed a unique experience of the phenomena. Some said they saw the statue's hand move a bit or that a tear feel from her eye or most commonly the apparition
Gene Phillips' Fiction, Film, and F. Scott Fitzgerald: "Youth is the keynote of every Fitzgerald tale - its careless ecstasy during one's twenties and the inevitable loss of it in one's thirties . . . His characters are all sad young men whose flame of life has burnt down to a lambent glow by the time they've got out of their twenties. This has become the basic problem of translating to the screen the stories of F. Scott Fitzgerald: very few actors who have names are young enough to interpret