Phy essays

Cheat Sheet for Intro/Phy essays Chapter 19  ¡V Chemical Bonding I. Why do atoms form bonds? 1. Most stable atoms have a filled valence shell. Most of the time this is 8 electrons. 2. Lewis Symbols  ¡V electron dot notation showing valence electrons. 3. Atoms form bonds by sharing, gaining, or losing electrons to obtain a filled valence shell. 4. The three major types of chemical bonds are Ionic bonds, Convalent bonds, and Metallic bonds. The type of bond formed depends on the Ionization Energy and electronegativity of the atoms involved. 5. Ionization energy (IE) The energy required to remove a valence electron. Metals have low IE and nonmetals have high IE. 6. Electro of Li and F using Dot Notation  ¡V this e. transfer requires energy. It does take a little energy to remove the e. from the Li, but because both are now stable, the result is a net lowering of energy. B. Size of formed Cations and Anions. 1. Metals tend to get smaller, so they lose e. and thus lose an energy level  ¡V cation. 2. Nonmetals te nd to gain e. so they are larger  ¡V anion. There is no increase in protons, so the nucleus does not pull it in smaller. Instead, it swells to make room. When ionic compounds form, ...

Practice in Correcting Errors in Parallel Structure

Practice in Correcting Errors in Parallel Structure When two or more parts of a sentence are parallel in meaning (such as items in a series or words linked by correlative conjunctions), you should coordinate those parts by making them parallel in form. Otherwise, your readers may be confused by the faulty parallelism. Editing Exercise Rewrite each of the following sentences, correcting any errors in parallelism. Answers will vary, but youll find sample responses below. We must either raise revenues or it will be necessary to reduce expenses.Stoics deny the importance of such things as wealth, good looks, and having a good reputation.In his farewell address to the army, the general praised his soldiers for their unsurpassed courage and gave thanks because of their devotion.The crowd that had gathered outside the court was loud and they were angry.The police have a duty to serve the community, safeguard lives and property, protect the innocent against deception, and they must respect the constitutional rights of all.Sir Humphry Davy, the celebrated English chemist, was an excellent literary critic as well as being a great scientist.The Johnsons were cheerful and knowledgeable traveling companions and behaved generously.The delegates spent the day arguing with one another rather than work together to find common solutions.My sisters promotion means that she will be moving to another state and take the children with her.A company is not only responsibl e to its shareholders but also customers and employees as well. Examples of aerobic exercises are distance running, swimming, cycling, and long walks.Consuming too much of a fat-soluble vitamin can be as harmful as not to consume enough.The gyrocompass not only points to true north at all times, it is unaffected by external magnetic fields.Everything that could make a sound either was removed or taped down.If you hire a contractor to make home improvements, follow these recommendations:Find out if the contractor belongs to a trade association.Obtain estimates in writing.The contractor should provide references.The contractor must be insured.Avoid contractors who ask for cash to dodge paying taxes.The new instructor was both enthusiastic and she was demanding.Annies dress was old, faded, and it had wrinkles.By the time she was two, the child was not only active but also she was well coordinated.It is a truism that to give is more rewarding than getting.A battery powered by aluminum is simple to design, clean to run, and it is inexpensive to produc e. Sample Responses We must either raise revenues or reduce expenses.Stoics deny the importance of such things as wealth, good looks, and a good reputation.In his farewell address to the army, the general praised his soldiers for their unsurpassed courage and thanked them for their devotion.The crowd that had gathered outside the court was loud and angry.The police have a duty to serve the community, safeguard lives and property, protect the innocent against deception, and respect the constitutional rights of all.Sir Humphry Davy, the celebrated English chemist, was an excellent literary critic as well as a great scientist.The Johnsons were cheerful, knowledgeable, and generous traveling companions.The delegates spent the day arguing with one another rather than working together to find common solutions.My sisters promotion means that she will be moving to another state and taking the children with her.A company is responsible not only to its shareholders but also to its customers and employees.Examples of aerobic exercises are distance running, swimming, cycling, and walking. Consuming too much of a fat-soluble vitamin can be as harmful as not consuming enough.The gyrocompass not only points to true north at all times but is unaffected by external magnetic fields.Everything that could make a sound was either removed or taped down.If you hire a contractor to make home improvements, follow these recommendations:Find out if the contractor belongs to a trade association.Obtain estimates in writing.Ask for references.Make sure that the contractor is insured.Avoid contractors who ask for cash to dodge paying taxes.The new instructor was both enthusiastic and demanding.Annies dress was old, faded, and wrinkled.By the time she was two, the child was not only active but also well coordinated.It is a truism that to give is more rewarding than to get.A battery powered by aluminum is simple to design, clean to run, and inexpensive to produce.