Is Energy Released When Chemical Bonds Are Formed

One of the biggest challenges for chemistry students is understanding whether energy is required or released when chemical bonds are broken and formed. One reason this can be confusing is that a complete chemical reaction can go either way. Exothermic reactions release energy in the form of heat, so the sum of the energy released exceeds the amount required. Endothermic reactions absorb energy, so the sum of the energy required exceeds the amount that is released. In all types of chemical reactions, bonds are broken and reassembled to form new products. However, in exothermic, endothermic, and all chemical reactions, it takes energy to break the existing chemical bonds and energy is released when the new bonds form. Breaking Bonds → Energy Absorbed Forming Bonds → Energy Released Breaking Bonds Requires Energy You have to put energy into a molecule to break its chemical bonds. The amount needed is called the bond energy. After all, molecules dont spontaneously break. For example, when is the last time you saw a pile of wood spontaneously burst into flames or a bucket of water turn into hydrogen and oxygen? Energy must be applied for these reactions to occur. Forming Bonds Releases Energy Energy is released when bonds form. Bond formation represents a stable configuration for atoms, sort of like relaxing into a comfy chair. You release all your extra energy when you  sink into the chair and it takes more energy to get you back up again.

Lester Browns Plan B 4.0 Mobilizing to Save Civilization

Lester Browns Plan B 4.0: Mobilizing to Save Civilization is one of a few books published that reveals in depth planning to ecological sustainability. Lester Brown is the President of a non-profit research organization titled â€Å"Earth Policy Institute,† which he founded in May of 2001. Mr. Brown has developed a four step plan to make the Earth a cleaner and better place. Throughout this paper we will be weighing the pros and cons of Lester Browns four step plan. Lester Brown’s plan has lots of upside but remember; nothing is free, everything produced has an opportunity cost. Mr. Brown is an intelligent human being, but fails to recognize the damage that can be made in producing â€Å"environmental-friendly† objects such as electric cars and windmills. It is also important to understand that every plan created for achieving ecological sustainability will have tremendous downsides. It is a good start, but humans are still decades, maybe even centuries away from creating the correct plan to achieve ecological sustainability. To understand the entirety of Lester Brown’s plan, you must break down each step individually. It is also important to comprehend that Lester’s results from each step could very well be correct but the process of each could do more harm than good. Before revealing plan 4.0, Mr. Brown explains the constraints, setbacks, and conflicts of the current world: skyrocketing food costs, steady increase of hunger (projected 1.2 billion by 2015), limited irrigation

My Favorite Place in the World Free Essays

The sun shines. The water glistens in the bright light. The wind swirls around me, unsettling the hot sand beneath my feet. We will write a custom essay sample on My Favorite Place in the World or any similar topic only for you Order Now I run to the ocean, disturbing the calm water as I dive in. The water surrounds me, engulfing me in its warmth. I am now at peace. For right now, at this moment, I am one with the water and the salt and the sand, and everything is okay. All my problems are washed away with the tide. It’s just me and the ocean. Just me and the beach. Just me and my favorite place in the world. I cannot describe how much the ocean means to me. The waves, the sand, the sun, the water, the world deep beneath the surface that no human truly understands, everything about it just connects with me. I grew up with the ocean; it was on the shores that I took my first steps, learned to swim, and grew familiar with all the small creatures the dwell near the shore. No, I didn’t entirely grow up on the beach, though I wish I had. I’ve lived since birth, in the Chicago land area. However, once a year my family has gathered in a beach house in North Carolina, right on the ocean, for a weeklong reunion. I treasured those precious seven days I had with my family on the beach, for that is all I got; seven days of pure happiness, and then I went back to my normal, beach-less life. Don’t get me wrong; I loved growing up in the city, but something about those weeks at the beach captured my heart and made me yearn for more. So many of my best childhood memories are centered on the shores of North Carolina. Surrounded by all my favorite people and things, there was never a dull moment. Though looking back it seems like we spent every waking moment on the beach and in the water, we also played games inside the beach house, or just hung out and talked while sitting on the porch, looking out at a beautiful beach sunset. When I was younger, no older than maybe six years old, I loved the waves. My cousins would be too scared to go near the big ones, preferring to stay near the shore. But as for me, the daredevil, I looked down upon the wimpy waves, wanting only the big ones that can only be found in deeper water. Once, a big storm hit our beach and all the strong men went out to try to conquer the 10 feet waves. I wanted so much to join them battle the sea. However, my mother would not let me go in. So instead, my cousins and I stayed on the porch watching, amazed at how the calm and peaceful ocean of the daytime could turn into such a monster. But the next morning, the sound of the calm waves crashing on the sandy shore greeted me as I first opened my eyes to the new day in paradise. The peaceful water I knew and loved had returned, waiting for me to go back in. Even the not so great things at the beach will grow on a person. For instance, the fact that sand gets everywhere may bother some people, but not me. And not just the places you would expect it to be, it’s everywhere. Even when you try so hard not to touch the sandy ocean floor, it gets in your swimsuit, the couch, the bed, and the floor. It just seems to follow you in the house, despite the many rugs feebly attempting the stop the sand at the front door. But while at any beach, you come to expect it. I not only came to live with sleeping with sand, but I also started to like it. I never had to leave the beach, even when I was sleeping. There are other down sides to being at the beach, but none of them bother me anymore. For example, no matter how much sunscreen you rub into your skin, you always seem to get sunburn somewhere. Or how it doesn’t matter if you are dripping with bug spray at night, the mosquitoes attack you anyway. But even sunburn and mosquito bites can’t ruin my trips to the beach. After all, I am at my favorite place in the world. How to cite My Favorite Place in the World, Essay examples

Farmer Essay Example For Students

Farmer Essay In The Sky By HeinleinThe book Farmer in the Sky by Robert A. Heinlein was published in 1950,when culture consisted of new teenage rebellion. It was written in the yearsfollowing World War 2. However, this book was not about the war, but mainlyabout the authors view on a solution to a worldwide problem in the future. The main character of this book, who was in his teenage years, was WilliamLermer. The central characters that surrounded him were Bills father George,his deceased mother Anne, his stepmother Molly, and his stepsister Peggy. Georgeand Anne had a great influence on shaping Bills character, George being themain role model. Bill would go to George for advice all the time. He would acton a decision the way he thought George would. They called each other by theirfirst names, which showed that they had great trust and togetherness. AlthoughAnne was not with Bill physically, she was with him emotionally. In Billsmind, Anne was the one who gave him an emotional push when he needed one. Bill learned his way of independence and his sense of family and morals from theboth of them. The books general theme was how an individual and a communityof people cope and interact through life-changing and traumatic events. Itproclaimed how someone can change and become stronger through a period of majoroccurrences, no matter what the age factor may be. The primary concept of thisbook was to show how people cope with issues facing mankind in a broader sense. Furthermore, it was how they dealt with dependence, in themselves and others. The time period of this story takes place sometime in the future, whenoverpopulation had become a problem. Supplies, such as food, had been rationed. This book was an intriguing insight into a 1950s authors outlook on thefuture. The author used his experiences of coming through a world in the midstof war in situations in the book. Heinlein had ideas to solving theoverpopulation problem, but it was not by commanding man. His idea wascolonization in a whole new place, which was one of Jupiters moons. It wasinteresting to see how a society that had all its resources back on Earth starta new life from practically nothing on a place billions of miles away. Therewere many examples of symbolism in this story, which represented both theauthors and societys values and morals. The Boy Scouts was something Billwas part of his whole life, on Earth and on the new colony. For a lifetime, theBoy Scouts have taught people good values, like seeing things through to the endand being able to survive no matter what the conditions. It also emphasized goodcharacter in people. To add to that, family was stressed in this story. TheLermers always stuck to gether as a family in moving to a new colony, starting anew life, and through disaster. Moreover, the story began too abruptly. It leftthe reader bewildered in the beginning about the time and the setting, and whatwas going on in the background. However, the book was crafted very well. Throughthe authors words, a view on society and their morals was expressed. He useda third-person technique to tell the story. The main character told story, butalso acted as an observer throughout the whole story. The vivid and veryrealistic world that he described made me wonder what the future holds for us. English Essays

Atwoods The Handmaids Tale A Study Of Rebellion Essays

Atwood's The Handmaid's Tale: A Study of Rebellion Rebels defy the rules of society, risking everything to retain their humanity. If the world Atwood depicts is chilling, if 'God is losing,' the only hope for optimism is a vision that includes the inevitability of human struggle against the prevailing order. -Joyce Johnson- Margaret Atwood's The Handmaid's Tale analyzes human nature by presenting an internal conflict in Offred: acceptance of current social trends (victim mentality) -vs- resistance for the sake of individual welfare and liberties (humanity). This conflict serves as a warning to society, about the dangers of the general acceptance of social evils and boldly illustrates the internal struggle that rebels face in choosing to rebel. Offred is a Handmaid in the republic of Gilead and while she seems unhappy about this, she is confused about her identity and even starts to accept the role that has been imposed upon her. It seems strange that one might accept such radical changes so easily. Offred has been manipulated into believing that this sinister system was designed for her own good. Peter S. Prescott says: Offred at first accepts assurance that the new order is for her protection. (151)She must lie on her back once a month and hope that commander makes her pregnant because her sole purpose is to act as a vessel. She even starts to measure her self-worth by the viability of her ovaries and this negatively affects her self-image. This is how Offred characterizes the deporing act : The commander is *censored*ing. What he is *censored*ing is the lower part of my body. I don't say making love because that's not what he is doing. Copulating too would be inaccurate because it would imply two people,when there is onl y one. Nor does rape cover it. Nothing was going on here that I haven't signed up for. There wasn't a lot of choice, but there was some and this is what I chose. (Atwood,121) This statement is very dangerous. It shows how Offred has convinced herself that this deploring act (rape) is not so bad. It also shows how she is beginning to embrace the system and justify the violations that are being commited against her. By calling it a choice she has shifted the blame from her oppressors to herself and labeled the blatant crime as a mere ritual. Offred shows signs of a developing victim mentality where she accepts defeat and associates the regime's will with her own. The danger lies in her complacency because if she accepts this role as being her choice she eliminates any need to rebel. This mentality provides her with a false sense of security which will impede her ability to fight back. We can try to argue tht Offred's unwillingness to resist was due to fear, but there's more to it than that. In the novel she is afraid that spies (eyes) are everywhere and that trust is a lost luxury. Maybe she was afraid to fight by herself. This seems understandable, but Offred's reluctance to fight back is more complicated than just fear. By coming to accept her role in the new society she clouds her perception of freedom and her need to rebel at all. Ehrenreich argues: Offred cries alot and lives in fear of finding her erstwhile husand hanging from a hook on the wall, but when she is finally contacted by the resistance she is curiously uninterested. (155) Ehrenreich also argues that Offred's unwillingness to embrace the resistance is due to her changed mentality; the system has been embedded in her. She states: Offred has sunk too far into the incestuous little house she serves. (155) So we can't say she's stuck in this alone others have revealed that they too want to fight. It's her altered character and acceptance of social evils that makes her weak. Gayle Greene calls her a Good German rather than a freedom fighter. Unlike Moira she doesn't have the rebel simmering in her from the beginning. Offred doesn't have Moira's strenghth, but she needs to believe in it.(159) Offred even says herself ,I don't want her to be like me. Give in, go along, save her skin...I want gallantry from her, swashbuckling heroism. Something I lack. (Atwood,327) At least Offred identifies

5 Verbose Sentences Made Shorter

5 Verbose Sentences Made Shorter 5 Verbose Sentences Made Shorter 5 Verbose Sentences Made Shorter By Mark Nichol When you write, think tight. The goal is not to reduce every sentence to its most concise form but to avoid distractingly extraneous wording and phrasing. Here are five sentences improved by a reduction in length. 1. â€Å"The teacher is speaking on a phone in his classroom between classes, and he breaks away for a moment to answer a student’s question.† To condense a sentence with two independent clauses separated by a conjunction, open a parenthetical where the sentence’s first verb appears, and close it where the second clause begins, deleting the verb and the conjunction respectively: â€Å"The teacher, speaking on a phone in his classroom between classes, breaks away for a moment to answer a student’s question.† 2. â€Å"The theme of this year’s summit is ‘From Essential Elements to Effective Practice,’ and the conference will include a variety of interactive sessions.† Here’s a revision of a sentence constructed like the one in the previous example, which is improved by the same technique deletion of the initial verb and parenthesis of what followed that verb: â€Å"This year’s summit, ‘From Essential Elements to Effective Practice,’ will include a variety of interactive sessions.† 3. â€Å"John Smith runs the DJ Project, an after-school program in San Francisco for students struggling in school. He uses hip-hop to connect with the students.† To combine two sentences into one, convert key information from either sentence into a parenthetical and tack the other statement onto the end: â€Å"John Smith, who runs the DJ Project, an after-school program in San Francisco for students struggling in school, uses hip-hop to connect with the students.† 4. â€Å"It’s rather annoying that you can’t turn off the various sounds that play when you use the zoom and other functions.† Strive to pare explanations and descriptions down to the fewest possible words. For example, there’s a standing phrase for the concept of â€Å"the various sounds that play†: â€Å"It’s annoying that you can’t turn off the sound effects for zoom and other functions.† 5. â€Å"Students worked collaboratively on unfamiliar and open-ended problems.† Look for opportunities to reduce sentence length by omitting a sentence’s verb and converting an adverb to a verb to take its place: â€Å"Students collaborated on unfamiliar and open-ended problems.† (The problem this revision solves is called smothering a verb.) Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Style category, check our popular posts, or choose a related post below:50 Slang Terms for MoneyWork of Art TitlesThrew and Through

Barclays Essay Example | Topics and Well Written Essays - 1750 words

Barclays - Essay Example According to Needham (1999), organization is the system that has a conventional structure and cognizant planning, in which people deal and work with one another in a supportive and synchronized manner for the achievement of common and recognized goal. Barclays is a major financial service provider in UK , engaged in retail banking, investment banking, credit cards, corporate banking and wealth management (Plunkett, 2005). They have marked their presence in other countries of the world like Europe, Asia, Africa and United States. The company is operating in more than 50 countries and has employed 147000 people (Great Britain: Parliament: House of Commons: Treasury Committee, 2011). Barclays looks towards investing and protecting the money of their clients and customers from all over the world. Organizational Structure Organizational structure is the hierarchy of the organization that shows how the elements within the organization works together to accomplish the common organizational goals. The organizational structure encompasses employees, departments, responsibilities of the employees, resources they require as well as the relation between the department and the employees working within the organization ... Barclays believes in an organizational structure that encourages continuity of the firm in investment processes. The organizational structure of Barclays is divided into several work groups and units according to their knowledge, expertise, resources and skill. Barclays is headed by the Chairman Sir David Walker. The Group Chief Executive Antony Jenkins is responsible for the strategic planning and direction of all the operations taking place in Barclays (Jenkins, 2013). He reports directly to the Chairman of the organization. The operations of Barclays are divided into two broad categories: Global Retail and Commercial Banking and Investment Banking and Management (Barclays Bank PLC, 2006). The Retail Banking business encompasses the retail banking, business banking, international retail and commercial banking (including and excluding Absa) and Barclays cards (Barclays, 2010). The Chief Executive who looks after all the operations of the Global retail and Commercial banking is also responsible for taking strategic decisions. The president of Barclays PLC and the Chief Executive is responsible for looking after the Investment Banking and Management section. Investment Banking and Management encompasses area like Barclays Capital, Barclays Global Investors and Barclays Wealth. All the decisions related to this branch are taken by the Chief Executive. All the Chief executives, Group finance Director, Group Vice Chairman and Chief Operating Officer of Barclays reports directly to the Group Chief Executive (Barclays Bank PLC, 2006). All the departments like finance, marketing, human resource, audit, risk, investment banking,