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Assignment 3: Mixtures, Compounds, Elements, Ionic And Covalent Bonds

751 words - 4 pages

Assignment 3: Mixtures, Compounds, Elements, Ionic and Covalent Bonds
By: Karen Owens
November 17, 2012
SCI 110
Professor Lawrance Mullen

1. Describe the difference between a mixture and a compound.
The difference between a mixture and a compound is that a mixture is a substance made by mixing other substances together. Most of the time two or more substances that are chemically united and they do not exist in fixed proportions of each other. Unlike a compound a mixture can be physically separated into pure compounds or elements. For example a cake is made up of different substances that are mixed together that are separated.
A compound on the other hand is just the opposite of ...view middle of the document...

Therefore in order to tell if a pure substance is a compound or element, you simply need to know if whether the substance is the element, made up of two or more different elements that can be observed by seeing the formula. The other option is to know if the substance is a compound by testing the thing and seeing what elements make up the item.
3. What is the difference between an ionic and covalent bond?
In order to know the difference between an ionic and covalent bond, we have to first understand the meaning of both bonds. Although they are somewhat similar in what they mean, they also differ. An ionic bond is a chemical link between two atoms caused by the electrostatic force between oppositely-charged ions in an ionic compound. A covalent bond Covalent bonding is a form of chemical bonding characterized by the sharing of one or more pairs of electrons between atoms, in order to produce a mutual attraction, which holds the resultant molecule together (Tillery, 2009).
The difference between an ionic and covalent bond are that an ionic bond is formed between two atoms. This is usually done by a metal and...

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