GED Study Guide for Chemistry

The GED, or General Education Development Test, is taken in the U.S. or Canada to demonstrate proficiency in high school-level academic skills. The exam most commonly is taken by people who did not complete high school or receive a high school diploma. Passing the GED grants a General Equivalency Diploma (also called a GED). One section of the GED covers science, including chemistry. The test is multiple choice, drawing on concepts from the following areas: The Structure of MatterThe Chemistry of LifeProperties of MatterChemical Reactions The Structure of Matter All substances consist of  matter.  Matter  is anything which has mass and takes up space. Some important concepts to remember about  matter  are: Matter  is made up of one or more of over 92 naturally-occurring  elements.Each  element  is a pure substance, made up of only one type of  atom.An  atom  consists of three types of particles:  protons,  neutrons, and  electrons. An atom does not need to have all three particles, but will always contain at least protons.Electrons  are  negatively charged  particles,  protons  have a positive charge, and  neutrons  do not have an electrical charge.An atom has an inner core called a  nucleus, which is where the protons and neutrons are located. The electrons orbit around the outside of the nucleus.Two main forces hold atoms together. The  electric force  holds the electrons in orbit around the nucleus. Opposite charges attract, so the electrons are drawn to the protons in the nucleus. The  nuclear force  holds the protons and neutrons together within the nucleus. The Periodic Table The  periodic table  is a chart which organizes the chemical elements. The elements are categorized according to the following attributes: Atomic Number  - number of protons in the nucleusAtomic Mass  - sum of the number of protons plus neutrons in the nucleusGroup  - columns or multiple columns in the periodic table. Elements in a group share similar chemical and physical properties.Period  - rows from left to right in the period table. Elements in a period have the same number of energy shells. Matter can exist in the form of a pure element, but combinations of elements are more common. Molecule  - a molecule is a combination of two or more atoms (could be  from  the same or different elements, such as H2  or H2O)Compound  - a compound is a combination of two or more  chemically-bonded  elements. Generally, compounds are considered to be a subclass of molecules (some people will argue they are determined by the types of chemical bonds). A  chemical formula  is a shorthand way of showing the elements contained in a molecule/compound and their ratio. For example, H2O, the chemical formula for water, shows that two atoms of hydrogen combine with one atom of oxygen to form a molecule of water. Chemical bonds hold atoms together. Ionic Bond  - formed when  an electron transfers  from one atom to anotherCovalent Bond  - formed when two atoms share one or more electrons The Chemistry of Life Life on earth depends on the chemical element  carbon, which is present in every living thing. Carbon is so important, it forms the basis for two branches of chemistry, organic  chemistry  and biochemistry. The GED will expect you to be familiar with the following terms: Hydrocarbons  - molecules that only contain the elements carbon and hydrogen (e.g., CH4  is a hydrocarbon while CO2  is not)Organic  - refers to the chemistry of living things, all of which contain the element carbonOrganic Chemistry  - study of the chemistry of carbon compounds involved in life (so, studying diamond, which is a crystalline form of carbon, isnt included in organic chemistry, but studying how methane is produced is covered by organic chemistry)Organic Molecules  - molecules that have carbon atoms linked together in a straight line (carbon chain) or in a circular ring (carbon ring)Polymer  - hydrocarbons which have chained together Properties of Matter Phases of Matter Each phase of matter has its own chemical and physical properties. The phases of matter you need to know are: Solid  - a solid has a definite shape and volumeLiquid  - a liquid has a definite  volume  but can change shapeGas  - the shape and volume of a gas can change Phase Changes These phases of matter can change from one to another. Remember the definitions of the following phase changes: Melting  - melting occurs when a substance changes from a solid to a liquidBoiling  - boiling is when a substance changes from a liquid to a gasCondensing  - condensation is when  a gas changes  to a liquidFreezing  - freezing is when  a liquid changes  to a solid Physical Chemical Changes The changes that take place in substances may be categorized  in  two classes: Physical Change  - does not produce a new substance (e.g., phase changes, crushing a can)Chemical Change  - produces a new substance (e.g., burning, rusting, photosynthesis) Solutions A solution results from combining two or more substances. Making a solution can produce either a physical or chemical change. You can tell them apart this way: The original substances can be separated from one another if the solution produces only a physical change.The original substances cannot be separated from one another if a chemical change took place. Chemical Reactions A  chemical reaction  is  the process  that occurs when two or more substances combine to produce a chemical change. The important terms to remember are: chemical equation  -  name  was given  to the shorthand used to describe the steps of a chemical reactionreactants  - the starting materials for a chemical reaction; the substances that combine in the reactionproducts  - the substances that are formed as a result of a chemical reactionchemical reaction rate  - the speed at which a chemical reaction occursactivation energy  - the external energy that has to be added in order for a chemical reaction to  occurcatalyst  - a substance that helps a chemical reaction to occur (lowers the activation energy), but does not participate in the reaction itselfLaw of Conservation of Mass  - this Law states that matter is neither created nor destroyed in a chemical reaction. The number of reactant atoms of a chemical reaction will be the same as the number of product atoms.

Essay about Golda Meir - 672 Words

Golda Meir nbsp;nbsp;nbsp;nbsp;nbsp;The state of Israel, established on May 14, 1948, had many great leaders that helped it to become a state. One of them was Golda Meir. Golda Meir was one of the most energetic and hardworking women in the world. Without her help, it is possible that Israel would have never survived as a state in an area surrounded by Arabs. With all of the hard work that Golda did for her country, she still had time for a family. nbsp;nbsp;nbsp;nbsp;nbsp;When Golda Meir (born Golda Mabovich) was in my opinion one of the most energetic and hardworking women in the world. If she set out to do something, whether it was to wash her families clothes or to create a Jewish state in the land of Israel, the job was†¦show more content†¦The government also refused to help Israel out by selling them weapons. Once again, the college students tried to do their best by sending parts to Israel. In one particular case, Students at the Columbia University sent a Cadillac overseas, in which the heavy steel body was loaded full of parts and gunpowder. nbsp;nbsp;nbsp;nbsp;nbsp;Golda Meir worked for many hours and even with all the effort she put forth into her country, she still had time for a family. On December 24, 1917, she married Morris Myerson of Milwaukee. After living all around the world, Golda and her husband Morris decided to settle down in Jerusalem to have a family. The couple had 2 children, Menachem who was born in 1924, and Sarah who was born in 1926. Golda Myerson was now a young mother and she had to spend the next few years raising her children. While her children were growing up, she still kept her ties to the Zionist Movement. She wrote letters to the leaders of most of the countries in the world in which she tried to convince them that the Jewish people needed a country of their own. nbsp;nbsp;nbsp;nbsp;nbsp;In the beginning of this book, there was an introduction written by Arthur M. Schlesinger, jr.. He was a Professor of History at Harvard University for many years. He served in the White House as a special assistant to Presidents Kennedy and Johnson. nbsp;nbsp;nbsp;nbsp;nbsp;In the book Golda Meir, all of the possible subjects that IShow MoreRelatedGolda Meir Essay examples1238 Words   |  5 PagesThrough showing intellectually competency, religious attitudes, and commitment to justice, Golda Meir is a profound example of an Ignatian leader. Over the course of her lifetime, Meir was able to promote her intelligence, her beliefs, and her just ideals in order to create a better society for those around her. 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The Importance of Doing and Turning Your Work in on Time Free Essays

Browne 1 Patrick Browne 9-29-12 Mr. Slade Boondocks Driven Satire Sunday nights on Cartoon Network has become fertile ground for some of the most side-spitting, razor-sharp humor on this side of a cable box. The show concepts that constitute the â€Å"Adult Swim† block of programming on CN has drawn its fair share of rave reviews and harsh criticism from anybody willing to offer an opinion. We will write a custom essay sample on The Importance of Doing and Turning Your Work in on Time or any similar topic only for you Order Now For Afro-American viewers, no show represents that aforementioned razor’s edge quite like Aaron McGruder’s comic strip creation, â€Å"The Boondocks†. The first season of the weekly series found every way possible to poke humor at many of the events, individuals, and situations we see around ourselves on a daily basis. In some cases, the biting satire that’s become this shows trademark may have opened up some ‘wounds’ that some folk in and among Black America would prefer to have left stitched up. From the would-be Revolutionary Huey, to the saggy pants wearing, â€Å"thugged† out Riley, to the blatantly Uncle Tom-like Uncle Ruckus, the characters and situations are cleverly designed to force us to look at ourselves through a very revealing lens. No person, topic, or issue has been too ‘taboo’ to examine within the show, which has drawn the ire of some of the more ‘prominent’ faces within the African-American community. Al Sharpton, Jesse Jackson, Oprah Winfrey, and Bill Cosby have been among the more outspoken detractors of the show, harping Browne 2 on the use of the dreaded â€Å"N† word among other things. The second season of the show may prove to be just as funny and potentially inflammatory as the previous one. The scrutiny has been pretty intense, drawing criticism from multiple sources in the black community, as well as some pretty severe rebukes from the aforementioned likes of Sharpton and Jackson. In fact, the pointed criticism that has come from these sources saying are we not supposed to talk about such things? Are we supposed to ignore some of the more embarrassing fads and unhealthy stereotypes that have come with this generation among black folk? I mean, we can talk about the war, how the government is ‘shafting’ the black man and woman out of our ightful piece of the American Dream. We can talk about all these things, but there’s a big stink about one person taking an assessment of our own house through his own prism. Maybe the real reason some folks are getting so uptight about what they see is because some of the material hits really close to home. As much as I respect the Cosby’s and the Jackson’s of the world, there method isn’t the on ly means to get the message across. Sometimes the finesse and subtle nature of satire and humor can deliver the same powerful, heartfelt message. Sometimes, we as black folk need to be shocked and ‘awed’ into seeing a particular reality. That’s what this show is; A strong smack in the mouth†¦ A wake-up call†¦ Humor is a pretty revealing thing; If we can take the time out to laugh at some of our own shortcomings, we can take the same type of time out to correct those issues and set about the task of strengthening our communities. Will we hear the occasional curse word, sure†¦ We might even hear the foul Browne 3 and dreaded â€Å"N† word a few more times before the show leaves syndication. So what is more important? Listening and acting on the message delivered to correct said problems, or whining about a character that portrays something that practically all of us have seen at some point during our lifetime? I don’t know about the next viewer, but this show represents solid with most Afro-Americans, which is why I’ll be tuned in for season four†¦I may indeed get a good laugh out of the over-the-top ‘pimp’ behavior of â€Å"A Pimp Named Slick Back†, or the numerous references to some of the out-of-control aspects of hip-hop culture. Through that laughter I and others tend to see a bit more of the reality that some of Black America seems too apathetic or too afraid, to confront the satire that this particular show represents. I can’t think of a better way to start that process than speaking on this issue through our own prism. Since 2005, Aaron McGruder has brought the previously unexposed taboos of Black American culture in its most raw and comedic form to the forefront of this country’s conscience through our TV screens. The tales of Huey, Riley, and Granddad Freeman’s migration from the Southside of Chicago to the lily white suburb of Woodcrest has endured its share of controversy. From public condemnation by Rev. Al Sharpton to threats of legal action by BET, The Boondocks, one of the most watched shows to be broadcast on Adult Swim, goes straight for the jugular of many of the most famous and infamous figures of our generation. As the main character on the show, Huey’s neo-Black nationalist views have been the centerpiece of some of The Boondocks’ most memorable moments. From blasting MLK for Browne 4 repeatedly saying ‘nigga’ on the â€Å"Return of the King† episode to calling Ronald Reagan a devil, Huey and his militant antics made way for more serious issues to be addressed. The way he schooled Granddad about the origins of Christmas and dropped knowledge about the negative and nostalgic images shown on cable giant Black Entertainment Television were classic and unprecedented. His less informed and gangster inclined little brother Riley barked ‘Ain’t nothin’ wrong with BET’, while he punctuated every sentence with an unapologetic ‘nigga’. Other episodes like â€Å"The Hunger Strike† and â€Å"The Uncle Ruckus Reality Show† ridiculed BET to the point where they pressured Sony to ban the shows. One of the funniest and ironically most criticized characters is Uncle Ruckus, a self-hating older black man and brother of Granddad Freeman creates a climate for one of the shows more controversial episodes, â€Å"Jimmy Rebel†. In this particular instance, Ruckus wrote music for a racist country singer, made mention to every known racial epithet to Black people, and called our president, ‘that baboon ‘Bama’. Other creative minds were not spared by McGruder’s satire, like Tyler Perry who was extremely roasted on the â€Å"Pause† episode, where they focused on Perry’s overzealous religious POV and used his cross-dressing and homosexual innuendos as fuel for the fire. It was a point in the episode where Granddad, whose voice is that of actor John Witherspoon, was forced by Perry’s character to say, ‘I renounce Ice Cube and all his works†¦even Friday! ’ Actor Kadeem Hardison was even clowned when his lack of persistent work in the film industry was mentioned as he auditioned for one of Perry’s plays turned films. Whitney and Bobby, Lil’ Browne 5 Wayne, and even fictional musical artists like Thugnificent are used to manifest negative, yet accurate portrayals of Black performers. There’s always talk about white television shows that ought to have black faces, but many of these same critics tend to overlook the reality that programming in general could stand to diversify, too. Diversity comes in many shades – most of which go beyond color. To that end, while it’s lovely to see so many shows strive to show the more â€Å"positive† aspects of black life, more often than not it appears to come at the expense of offering our perspective as it relates to race, class, and pop culture on the airwaves. There are plenty who confirm the satire found in the social and political commentary on the show, and other instances of the kind of acute humor found in shows like The Boondocks and Chappelle’s Show. That kind of humor, for the most part, can only be found in shows largely scripted and conceived by whites like The Daily Show, or even Family Guy and The Cleveland Show. Those shows are great, but still come from a separate point of view. The Boondocks has been known to be brought up in conversations as a point of reference to show how much driven satire entertainment that is enjoyed by Black people is a step backwards toward the days of the minstrel shows, but you have to be able to keep laughing, even if it’s at your own shortcomings. Browne 6 Works Cited Allah, Shabe. â€Å"The Boondocks†. The Best of Boondocks. Source Magazine 24 June 2010. Seward III, Herbert. â€Å"The Boondocks†. The Boondocks: Offensive show or stinging reality. Yahoo article 16 November 2007. Arceneaux, Michael. â€Å"The Boondocks†. Black Satire. Thegrio 18 May 2012 How to cite The Importance of Doing and Turning Your Work in on Time, Essay examples