Nobody downloaded yet

Elements, Mixtures and Compounds - Essay Example

Comments (0) Cite this document
Summary
Elements, Mixtures and Compounds Your Name University Schools Number and Name of Course (e.g., May 13, 2012) Elements, Mixtures and Compounds 1) Describe in detail the difference between a mixture and a compound.  A mixture comprises of two or more substances that are not held together by chemical bonds…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER95.6% of users find it useful
Elements, Mixtures and Compounds
Read TextPreview

Extract of sample
"Elements, Mixtures and Compounds"

Download file to see previous pages For example, a mixture of iron and sulfur can be taken in any proportion while a compound such as iron (II) sulfide always has a ratio of 7 : 4 by mass of iron and sulfur (Leong & Aik, 2009). When a mixture is prepared by mixing two or more substances, there is no chemical exchange involved and there is absence of heat or light production. When a compound is prepared, it is usually accompanied with a chemical change in which some heat, light or both are liberated. For example, when a mixture is prepared by mixing iron filings and sulfur, no heat is liberated. However, when hot iron filings and sulfur are taken together in a test tube, a chemical reaction occurs resulting in the formation of iron sulfide (Fe + S ?FeS). The test tube glows red because of heat produced during the reaction (Leong & Aik, 2009). The properties of a mixture are characteristic of the individual substances mixed. On the contrary, the properties of a compound are very different from those of the original elements. For example, in a mixture of iron filings and sulfur, properties such as magnetism, color, texture of the individual substances are retained. Iron sulfide, a compound, has very different properties from those of iron and sulfur. It lacks magnetic activity and also has different physical and chemical properties (Leong & Aik, 2009). ...
2) Supposed that you have a pure substance, how can you tell whether it is a compound or an element?  An element cannot be further broken down chemically, while a compound can be broken down into individual components or elements using chemical reactions specific for that compound. For example, heating mercuric oxide, which is a compound, over a Bunsen flame, will result in the decomposition and separation of mercuric oxide into mercury and oxygen. However, mercury and oxygen, which are elements, cannot be further broken down using any chemical means (Leong & Aik, 2009). Therefore, in order to tell whether a given pure compound is an element or a compound, it will be subjected to various separation procedures to determine if it can be broken down further. Its melting and boiling points and other physical and chemical properties will also be noted and compared with those of preexisting elements and compounds for ease of identification. 3) What is the difference between an ionic and a covalent bond? Chemical bonds such as ionic and covalent bonds determine the properties of a compound. The main differences between the two kinds of bonds are discussed as follows: Ionic bond is formed when electrons are transferred from one atom to another. The transfer of electrons results in the formation of a positive and a negative ion that are held together by strong electrostatic attraction. For example, salt (NaCl) is formed when an electron from sodium (Na) is transferred to chlorine (Cl) to form ions (Na+ and Cl- ) that are held together to form salt (NaCl). Covalent bond is formed when an electron pair from the outer shell is shared between two atoms. For instance, Hydrochloric acid ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Elements, Mixtures and Compounds Essay Example | Topics and Well Written Essays - 1000 words”, n.d.)
Retrieved from https://studentshare.org/chemistry/1451290-elements-mixtures-and-compounds
(Elements, Mixtures and Compounds Essay Example | Topics and Well Written Essays - 1000 Words)
https://studentshare.org/chemistry/1451290-elements-mixtures-and-compounds.
“Elements, Mixtures and Compounds Essay Example | Topics and Well Written Essays - 1000 Words”, n.d. https://studentshare.org/chemistry/1451290-elements-mixtures-and-compounds.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Mixture and compound
A compound on the other hand, is a pure substance made of two or more chemically combined elements. Compounds are separable by chemical means such as electrolysis, oxidation and reduction (Phillips, 1998). A mixture and a compound also vary on the composition of the component elements.
3 Pages(750 words)Essay
Mixture and a compound
It also describes how to differentiate an element and a compound despite being pure substances by results from decomposition. In the paper the metals, non-metals, and transitional elements are discussed to demonstrate the bonds. Ionic bonding formed between metals and non metals are explained and illustrated.
5 Pages(1250 words)Essay
Compounds
Many seafood including fish, seaweed, and shellfish are very rich in iodine. Other products that contain iodine include dairy products derived from milk and milk. Other consumer products that contain iodine
3 Pages(750 words)Assignment
The Universe
As a result, separation of mixtures does not change composition of the components while separation of compounds does. Another difference between a
2 Pages(500 words)Essay
Sociology 101
One way to distinguish between mixtures and compounds is through the law of constant composition which states that the ratio by mass of the elements in chemical compound is always the same regardless of the source of the compound (“Elements, Compounds and
2 Pages(500 words)Essay
Chemical engineering distillation column
The paper explores a case to illustrate a test procedure for efficient functionality of a distillation column given limited time resource. The problem involves provision of engineering support to a company’s ethanol production plant. The company’s operation
2 Pages(500 words)Essay
Separation of Complex Cations of Chromium(III) by Ion Exchange Chromatography
It is resistant to oxidation by atmospheric oxygen thus it is safe to say that it does not corrode easily (Crompton, 2002 p350). They are formed very slowly in aqueous solutions but not in surfactant solutions.
2 Pages(500 words)Essay
Oxygen releasing compounds in groundwater remediation
In order to achieve all these; we all need to treat, protect the water and soil, which are the most crucial elements in the human being lives. This essay will involve on the physical, chemical and also, biological methods of purifying
4 Pages(1000 words)Essay
Volatile organic compounds/ soot hair spray
2. People mostly stay indoors, where there is a higher air pollution concentration than outdoors. Emissions from volatile organic compounds encountered in everyday life have a direct
2 Pages(500 words)Essay
Volatile Organic Compounds in School
Academic literature and literature from reputable agencies and institutions extensively discuss volatile organic compounds because of their toxic qualities, and because they are prevalent in the environment, as byproducts of human activity. First, by organic compounds is meant compounds that contain carbon, an element that is present in all forms of life.
5 Pages(1250 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Essay on topic Elements, Mixtures and Compounds for FREE!
logo footer
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us