Chemical compound Essays

Chapter two discussed chemical compounds and their different representations whether naming and or through formula format. From such information, the amount of atoms, moles, and or determining charges can be found. All formulas can convey a limited amount of information depending on which structure has been selected to represent the compound. Compounds are usually shown by a chemical formula. Once compounds have bonded through the attraction of protons and electrons, if the bond is ionic or covalent

Chemistry, compounds are defined as any substance that is composed of atoms of two or more elements that are combined in fixed ratios. Compounds can often be reduced in order to separate their elements and study their properties. Compounds such as water (H2O) and Carbon Dioxide (CO2) for example, both contain oxygen and can therefore undergo a process of decomposition that will isolate the elements in order to calculate the quantity of each element and molecule present in the compound. Any compound with

melting point than Na. Reason: Compare the number of delocalized electrons. Type 2: ionic compound vs ionic compound Example: Explain why NaF has a higher melting point than NaCl. Reason: Compare lattice energy. Type 3: simple molecule vs simple molecule Example: Explain why H2O has a higher melting point than H2S. Reason: Compare the relative strength of the intermolecular forces. Type 4: ionic compound vs simple molecule Example: Explain why NaCl has higher melting point than H2O. Reason:

techniques such as recrystallization, extraction, melting point, and acid-base reactions. From this, the group to which these two compounds belong to had to be determined. These groups are: Carboxylic Acids, phenols, and neutrals. By determining the melting points of the two unknown compounds, these values were compared to the values of melting points in the chart and the proper compound was selected. For the case of this experiment, the unknown mixture contained, 4-methylbenzoic acid. The neutral was not

Ceylon Cinnamon versus Cassia Cinnamon Cinnamomum verum which means “true cinnamon” is a lighter, brighter spice that is obtained from the inner bark of a tree native to Sri Lanka. Ceylon Cinnamon, as it is more commonly known as, is a milder spice as compared to the more regularly used Cassia Cinnamon. Although many countries in South-East Asia grow cinnamon, Ceylon Cinnamon is the world’s best. It’s mild, smooth aroma and taste is perfect for gourmet, desserts, smoothies, flavoring meat and basically

Chem 51LB Report Ngoc Tran - Student ID # 72048507 The purpose of this lab is to examine the composition of three components of gas products of elimination reaction under acidic condition by conducting the dehydration of primary and secondary alcohol, and under basic condition by conducting the base-induced dehydrobromination of 1-bromobutane and 2-bromobutane. Then gas chromatography is used to analyze the composition of the product mixtures. Gas chromatography (mobile phase) is used to analyze

this test left 3 possible compounds; NaHCO₃, Na₂CO₃, and CaCO₃. Next the compound was tested with iodine and the solution turned yellow showing that now there was two compounds that could be the identity of unknown powder E; NaHCO₃ and CaCO₃. After that compound E was tested for being soluble in water, the powder was soluble, this proved that unknown element E is NaHCO₃. Unknown Element K was also first tested following the steps for the phenolphthalein test and the compound turned clear, this test

Unknown compounds verification Introduction: In Project 3 we are going to test an unknown compound and there are several different ways that can help us to identify the Unknown substance. And there is some pre-lab information that found in the internet. By Experiment 3: Identification of a Substance by Physical Properties “Every substance has a unique set of properties that allow us to differentiate one from another. These properties can be classified as either physical properties or chemical

an Unknown Compound using Quantitative and Qualitative Analysis Lauren Tremaglio Chemistry 1011 Lab, Section 16 Instructor: Steven Belina October 3, 2014 Our signatures indicate that this document represents the work completed by our group this semester. Experimental Design and Discussion of Results The objective of this experiment was to identify an unknown compound through quantitative and qualitative analysis. In order to find the identity of the unknown compound, an initial

An unidentified compound was found in a landfill and the group was ordered to investigate and identify the unknown substance. Figuring out the physical and chemical properties was needed in order to make predications on how the compound might behave. Syntheses of the compound were devised to figure out cost effectiveness, safety, and potential yield of the newly identified compound. Final results established that the unknown compound was NaCl. (1) Initial observations concluded that physically the

Introduction: In this experiment, we are required to discover the 2 unknown chemicals provided by the teacher through the usage of different lab equipment and scientific procedures to conclude what the unknown substances are. The findings/results will be presented in a qualitative table and further discussed. There are 6 possible substances that the 2 unknowns could be. If the substance is benzoic acid then it would have to pass the organic solvent test because it dissolves in only organic solvents

During the circle time, Caydence sing a song along with her peers, ABC Song, “A,B, C, D, E, F G, H, I, J, K,….O,P, Q, …., my A, B, C, ne…..sing wit.. me.” Next, the teacher uses the cards of shapes. When the teacher shows cards of shapes and everyone says the names of shapes, Caydence says, “Circle, star, square....”: she does not say all names of shapes. Then the teacher shows the cards of colors, Caydence says, “Red, blue, yellow, green, orange, pink, purple…” as the teacher shows the cards:

It is “foolish men” who fail to see that acute insightfulness is a vehicle for precise thinking. Nevertheless, the speaker shuns drawing conclusions about whether the creation of art contributes to, or ease madness, by attributing her speculations to theories others have proposed. In the final lines of the poem, however, she endorses the decision to explore dark corners of the mind and expand the limitations of the self by drawing attention to the affective dimension of the work, the beneficent effect

Analyses - Let America Be America Again Langston Hughes uses a varied meter in “Let America Be America Again”. In the first line and title of his poem he starts with the first syllable [let] stressed, followed by a unstressed syllable [a]. This trochaic dimeter is used just for the first four syllables, following a iambic tetrameter starting with [ca] unstressed and [be] stressed. The second line starts with a trochee, but this time with eight syllables, therefore a tetrameter. The last syllable

the final results. Introduction The purpose of this experiment was to determine the amount of each compound is found in the original mixture. Starting with a mixture of substances the components of the mixture should be able to separate. During this separation all of the components together should have the same mass as that of the starting mass of the mixture. According to the Law of

The Red Wheelbarrow The Red Wheelbarrow is a poem written by an American poet called William Carlos Williams. Initially, the poem was published without a title, and the poem is in form of verse form. Williams in his writing constructs an image within the readers mind. The author uses simple words to construct a poem that is basically based on imagery philosophy. Williams’s poem is all about a red wheelbarrow that is painted in the readers mind in order to create a flamboyant picture. The Red Wheelbarrow

The poem “A Fit of Rhyme against Rhyme” is a response to Samuel Daniel’s prose essay A Defence of Rhyme, in which Daniel describes rhyme as an “antidote to endless motion, to confusion, to mere sensation, to the sway of the passions” (Reading the Early Modern Passions: Essays in the Cultural History of Emotion, 146); while Jonson’s response describes rhyme as a “rack of finest wits, that expresseth but by fits true conceit” (1072, 1-3). Jonson’s poem ironically uses rhyme to ridicule rhyme in a

Healthcare employee safety is very important and should be a high priority. In the healthcare setting the employees must pay attention to his or her surroundings. This essay will include several objectives such as injury prevention, emergency readiness, and training. Keeping the employees safe is not easy while working in the environment full of dangers. I will discuss the importance of employee training, personal safety, safety slogans, environmental safety and informational posters. INJURY PREVENTION:

and mixtures. A pure substance is a substance with a fixed structure. We can classify a pure substance by its physical properties such as melting or boiling point. A pure substance is seen as an element or a compound. You can find the element information on the periodic table. And a compound is made up of multiple elements. A mixture does not have a uniform structure and has more than one substance in it. A substance can be classified as homogeneous or heterogeneous. A homogeneous mixture is described

Experimental Procedure Identifying the Unknown We performed three tests on our compound to definitively identify it. First we combined 5 g of our unknown compound with 10 mL of distilled water and measured the pH change in the water to test its solubility. Then, to try to identify the cation present in our compound and narrow down the possibilities, we held a sample over a flame and watched for color change. We performed an acid test where we applied a few drops of HCl and watched for a bubbling