What Is a Word Equation in Chemistry

In chemistry, a word equation is a chemical reaction expressed in words rather than chemical formulas. A word equation should state the reactants (starting materials), products (ending materials), and direction of the reaction in a form that could be used to write a chemical equation. There are some key words to watch for when reading or writing a word equation. The words and or plus mean one chemical and another are both reactants or products. The phrase is reacted with indicates the chemicals are reactants. If you say forms, makes, or yields, it means the following substances are products. When you write a chemical equation from a word equation, the reactants always go on the lefthand side of the equation, while the reactants are on the righthand side. This is true even if the products are listed before the reactants in the word equation. Key Takeaways: Word Equations A word equation is an expression of a chemical reaction or mathematical equation using words rather than letters, numbers, and operators.In chemistry, a word equation indicates the order of events of a chemical reaction. The number of moles and types of reactants yield the number of moles and types of products.Word equations help in learning chemistry because they reinforce the thought process involved in writing a chemical reaction or equation. Word Equation Examples The chemical reaction 2 H2(g) O2(g) → 2 H2O(g) would be expressed as: hydrogen gas oxygen gas → steamAs a word equation or as Hydrogen and oxygen react to form water or Water is made by reacting hydrogen and oxygen. While a word equation doesnt ordinarily include numbers or symbols (Example: You wouldnt say Two H two and one O two makes two H two O, sometimes it is necessary to use a number to indicate the oxidation state of a reactant so that a person writing a chemical equation can do it correctly. This is mostly for the transition metals, which can have multiple oxidation states. For example, in the reaction between copper and oxygen to form copper oxide, the chemical formula of copper oxide and the number of copper and oxygen atoms involved depends on whether copper(I) or copper(II) participates in the reaction. In this case, it would be fine to say: copper oxygen → copper(II) oxide or Copper reacts with oxygen to produce copper two oxide. The (unbalanced) chemical equation for the reaction would start out as: Cu O2 → CuO Balancing the the equation yields: 2Cu O2 → 2CuO You would get a different equation and product formula using copper(I): Cu O2 → Cu2O 4Cu O2 → 2Cu2O More examples of word reactions include: Chlorine gas reacts with methane and carbon tetrachloride to produce hydrogen chloride.Adding sodium oxide to water produces sodium hydroxide.Iodine crystals and chlorine gas react to make solid iron and carbon dioxide gas.Zinc and lead two nitrate make zinc nitrate and lead metal.which means: Zn Pb (NO3)2 → Zn(NO3)2 Pb Why Use Word Equations? When youre learning general chemistry, work equations are used to help introduce the concepts of reactants, products, the direction of reactions, and to help you understand precision of language. They may seem annoying, but are a good introduction to the thought processes required for chemistry courses. In any chemical reaction, you need to be able to identify the chemical species that react with each other and what they make. Word Equations in Other Sciences Chemistry isnt the only science to use equations. Physics equations and mathematical equations may also be expressed in words. Usually in these equations two statements are set to be equal to each other. For example, if you way force equals mass multiplied by acceleration then you are providing the word equation for the formula F m*a. Other times, one side of the equation may be less than (), greater than (), less than or equal to, or greater than or equal to the other side of the equation. Addition, subtraction, multiplication, division, logs, square roots, integrals, and other operations can be stated in word equations. However, complex equations that contain parentheses to describe the order of operations are very hard to understand as word equations. Source Brady, James E.; Senese, Frederick; Jespersen, Neil D. (December 14, 2007). Chemistry: Matter and Its Changes. John Wiley Sons. ISBN 9780470120941.

Essay on A Comparsion of Bill Gates and Steve Jobs

Introduction Bill Gates and Steve Jobs are intelligent innovative thinkers who have always new things to show and give to the world, and both of them are known as the best-known entrepreneurs of the personal computer revolution in the modern age. These two entrepreneurs may both work in the field of technology, but they also have many differences to distinguish themselves from one another. Early Life Bill Gates grew up in a wealthy area in Seattle, Washington, with his parents and two sisters. As the son of a lawyer and a schoolteacher, Gates attended a public school and then went to the Lakeside School, a private college prep institute. During his years at Lakeside School Gates became interested in the field of computer programming, he†¦show more content†¦He is also known as an avid reader, and the ceiling in his home library has an engraving that says The Great Gatsby. Gates also enjoys playing bridge, tennis, and golf. In 1980, Jobs found his birth mother, Joanne Schieble Simpson. Then in 1984, Jobs purchased the Jackling House, a 17,000-square-foot, fourteen bedroom mansion. He had a biological sister, Mona Simpson who he met for the first time in 1985. Jobs’s first child, Lisa Brennan-Jobs was born in 1978. She was the daughter of a longtime friend Chrisann Brennan, who was a Bay Area painter. Chrisann raised her daughter on welfare for two years , while Jobs denied paternity. Later, Jobs married Laurene Powell on March 18, 1991, in a ceremony at the Ahwahnee Hotel in Yosemite National Park. They later had a son, Reed, who was born September 1991, followed by daughters Erin in August 1995, and Eve in 1998. The similarities that both of these men have are that they both have two daughters and one son. They also have both purchased multi-million dollar estates. Their houses are both located on a hill overlooking the city in which they live. Education Gates entered Harvard University in 1973 and pursued his studies for the next year and a half. However, his life changed in January 1975 when Popular Mechanics carried a cover story on a $350 microcomputer, the Altair, made by a firm called MITS in New Mexico. When Allen showed him the story, Gates knew where he wanted to be: at the forefront ofShow MoreRelatedEssay about Comparsion of Steve Jobs and Bill Gates1599 Words   |  7 PagesIntroduction Steve Jobs and Bill Gates are two of the most well-known names of our generation for being the co-founders of two very large corporations. Steve Jobs being the co-founder of Apple, also the founder of Pixar and NeXT. Bill Gates, most known for being the co-founder of Microsoft, which is the biggest software company in the world. Though, without a doubt, both of these men were very successful in their professional lives for mainly the same thing and similar in their ways, but very different

Elvis Aron Presley Essay Example For Students

Elvis Aron Presley Essay At the time, no one realized that The world of music and entertainment would foreverchange. It was noon, on January 8, 1935, when Gladys Smith Presley, a poor MississippiGod-fearing sewing machine operator and wife of farm hand Vernon Elvis Presley, gave birth totwin sons Elvis Aron and Jesse Garon Presley. Buried in an unmarked Priceville, Mississippigrave, Jesse Garon died within six hours of birth. Jesses twin, Elvis Aron, was to become the most influential force in the history ofpopular music and a melding force between cultures. As the worlds most endearing andsuccessful entertainer of his age, Elvis sold over three hundred million records, and createdthirty-three films. Today, Elvis is known world wide as The King of Rock n Roll.? The dirt-poor withhis polite and well-mannered ways, patterned his famous ?wiggle? and early singing style formthe gospel revival preachers he grew up with at the familys First Assembly of God Church. ?We were broke, man, broke, and we left Tupelo overnight,? Elvis said, a quote whichtypifies his early life, following his parents from job to job. In 1939 the total combined Presley salary was $35 a week, when young Elvis wasenrolled in L.C. Humes High School in Memphis, Tennessee. After graduation from HumesHigh School in 1953, while driving a truck for an electric company, Elvis passed a sign thatwould lead him to fame. The sign read, ?Memphis Recording Service-Make your ownrecordsFour dollars for two songs.?This is where Sam Phillips of Sun Records found his man. In August 1954, WHBQ radioin Memphis released the birth of a Rock n Roll legend with, ?Thats All Right, Mama.?After an unsuccessful Grand Ol Opry stint, 1955 brought ?Good Rockin Tonite? and?Milk Cow Blues Boogie.? The flamboyant personal manager/promoter, Colonel Tom Parker,who was managing the big talents of the day like Eddie Arnold and Hank Snow, started quietlyhelping Elvis with bookings. My July 1955, ?Baby, Lets Play House? hit the national best sellercharts. In 1957, Elvis moved from his suburban East Memphis home on Audubon Drive, to hisnew home, Graceland. March 1960 brought Elvis home from the war as a civilian. Huge crowds followed himhome to Graceland. The Colonel worked hard to gain Elvis favor back, and by mid 1960, fivethousand fan clubs were generating 30,000 fan letters a month. Elvis was forced into seclusion, as any public appearance would cause a riot. Anentourage of Memphis men soon referred to as the ?Memphis Mafia? escorted him everywhere. Endless work and strange eating habits followed. Too much peanut butter and bananasandwiches, burnt bacon, olives and vegetable soup pushed his weight up dramatically. On October 19, 1973, Elvis and Priscilla separated after five years of marriage. Elvissited the tremendous strain of six months on the road. Priscilla was awarded custody of theironly child, Lisa Marie. Nights were filled with Gospel signing, and days were spent sleeping, asElvis entered into his forties. Extreme dieting and exhaustion landed him in the hospital, andVegas gigs became predictable while fanatical fandom worshipped him overseas. In 1975 Elvis bought a jet airliner and named in after his daughter, ?The Lisa Marie?. His meteoric rise to fame, and the following legions of idolizing fans, is truly a phenomenonbeyond this worlds experience. We can only marvel at his achievements, and live along side hismystic legend and following. Elvis and his fans were symbiotic, each depending, sharing, andsupporting the other. On August 16, 1977, a shocked world would learn of his death. Rushed to BaptistMemorial Hospital in Memphis, from Graceland, Elvis was pronounced dead on arrival ofcardiac arrhythmiaerratic heart beat. Thousands gathered at his home in Graceland to mournand weep in disbelief. Thousands more still made the pilgrimage to the Graceland grave eachyear for the ritual August Candlelight Vigil. The King lives on today in our memories, hisfamily, his films, his recordings, and in our hearts. It is rare in this world, that such animpression is made on the people in ones own time. .u2185983f3cd1ca87dbcd4a6417ab59 29 , .u2185983f3cd1ca87dbcd4a6417ab5929 .postImageUrl , .u2185983f3cd1ca87dbcd4a6417ab5929 .centered-text-area { min-height: 80px; position: relative; } .u2185983f3cd1ca87dbcd4a6417ab5929 , .u2185983f3cd1ca87dbcd4a6417ab5929:hover , .u2185983f3cd1ca87dbcd4a6417ab5929:visited , .u2185983f3cd1ca87dbcd4a6417ab5929:active { border:0!important; } .u2185983f3cd1ca87dbcd4a6417ab5929 .clearfix:after { content: ""; display: table; clear: both; } .u2185983f3cd1ca87dbcd4a6417ab5929 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u2185983f3cd1ca87dbcd4a6417ab5929:active , .u2185983f3cd1ca87dbcd4a6417ab5929:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u2185983f3cd1ca87dbcd4a6417ab5929 .centered-text-area { width: 100%; position: relative; } .u2185983f3cd1ca87dbcd4a6417 ab5929 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u2185983f3cd1ca87dbcd4a6417ab5929 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u2185983f3cd1ca87dbcd4a6417ab5929 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u2185983f3cd1ca87dbcd4a6417ab5929:hover .ctaButton { background-color: #34495E!important; } .u2185983f3cd1ca87dbcd4a6417ab5929 .centered-text { display: table; height: 80px; padding-left: 18px; top: 0; } .u2185983f3cd1 ca87dbcd4a6417ab5929 .u2185983f3cd1ca87dbcd4a6417ab5929-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u2185983f3cd1ca87dbcd4a6417ab5929:after { content: ""; display: block; clear: both; } READ: Pearl Harbor Attack Essay