Wednesday, May 6, 2020
The Importance Of A Christian Worldview - 1611 Words
Worldview is how someone would view the world around them. In a personââ¬â¢s world view it controls how their lives is lived out in the world, and how they would respond to certain things that goes on around them in the world. A personââ¬â¢s worldview is important to them, because it plays a big part in their lives, and they make ethical and moral decisions based on what their worldview is. A Christianââ¬â¢s worldview is described in how a person follows the teaching of Jesus in the bible, and he or she is committed to following Jesus teachings. According to John 14 verse 6 ââ¬Å"Jesus answered, I am the way and the truth and the life.â⬠(The NIV Rainbow Study Bible, 2017). Christians believe in God the father, God the son, and God the Holy Spirit, three inâ⬠¦show more contentâ⬠¦Everything on earth is dependent on God. Humanity Our human nature is what makes us human, in which we are clearly different from animals. God gave us the ability to talk, smell, hear, touch, see, feel, and think. ââ¬Å"The creation of humanity in the image of God shows the special relationship between God and humans. While God created all things, humans are the only creatures that God created in his image and that God breathed the breath of life into (Genesis 2:7).â⬠(Diffey, 2017). Humans also possess some of Godââ¬â¢s attributes, such as loving, caring, patience, faithfulness, and compassionate. ââ¬Å"God s purpose for humanityââ¬âto reconcile people to himself through rescue, redemption, and renewal.â⬠(Lecture 5, 2017). Humans have many purposes, but the most important purpose is having a close relationship with their creator God. Humans were created to worship, obey, have dominion on earth, serve and keep the garden (Diffey, 2017). Humanity now has problems in the world today, because of Adam and Eveââ¬â¢ s disobedient to God and did not listen to his commands, and fell for Satanââ¬â¢s lies. They ate from the tree of the knowledge of good and evil, the one tree that God forbid them not to eat from. The fall of Adam and Eve, is the root cause of all the problems that humans are going through now in the world. Humans now have a sinful nature, because the fall introduced sin into the world. In the world, weShow MoreRelatedDifferent Philosophies That People Believe1634 Words à |à 7 PagesThere are several different worldviews that people believe in. Those might ask what exactly is a worldview? Here is the definition: ââ¬Å"A worldview is the framework of basic beliefs that we hold, whether we realize it or not, that shapes our view of and for the world. Everyone has a worldview. The question is not whether one has a worldview but which one has.â⬠1 Here is the definition of a biblical worldview rather than just a worldview: ââ¬Å"A biblical worldview is based on the infallible word ofRead MoreFinding Scripture: Humanity and Ethics Worksheet and Journal #41108 Words à |à 5 PagesStudent Success Center. Please type your answer directly beneath each question so the instructor can see the question and your answer in the same place. 1. Write 2-3 sentences explaining why the creation account is so significant to the Christian worldview. What difference does it make to someoneââ¬â¢s thought and practice to believe that humans are created in the image of God versus being the result of random processes acting blindly on matter? Being created in Gods image is so significant to theRead MoreEssay on Biblical Foundations1389 Words à |à 6 Pagesplan of what a school is going to teach during a school year. The time frame of the curriculum can vary from a quarter to a semester to even being taught the entire school year. Wayne (2010) suggests that each individualââ¬â¢s personal biblical worldview impacts each person in their beliefs and opinions about curriculum development differently. The stance taken by this individual is that of trying to see things in the manner that God would want. God is all knowing and being all knowing, He knowsRead MoreCritical Thinking : Islam Worldview / Christian Worldview 21086 Words à |à 5 PagesCRITICAL THINKING: ISLAM WORLDVIEW/CHRISTIAN WORLDVIEW 2 The Question of Origin Islam Worldview The beginning of life according to Islam was facilitated by the prophet Muhammad. But, Islam began long before Muhammad. Muhammad dictated to the Quran, which is the holy book of Islam. The followers of the Islam religion call themselves Muslims. ââ¬Å"There is approximately 1.8 billion people that follow the Islam religion. It is the second largest religion in the worldâ⬠(Lipka, 2017). FollowersRead More What is Worldview? Essay example1024 Words à |à 5 Pages After reading the fourth chapter heading of Consider, the first definition of worldview that came to my mind was ââ¬Å"view of the worldâ⬠just from a literary perspective. The co-authors defined worldview as ââ¬Å"a framework a person brings to decision-makingâ⬠(Weider Gutierrez, 2011, p.51). Everyone has a worldview with main characteristics that are ever changing. Different sources influence this framework such as parenting, friendship, telecommunication or internet media, educational and religiousRead MoreReview of Integrative Approach to Psychology and Christianity by David Entwistle994 Words à |à 4 PagesChristianity: an introduction to worldview issues, philosophical foundations and models of integration, by David N. Entwistle. As the title states, this book discusses how to integrate psychology and theology. It also dives into to why it is so important to be able to integrate the two. Entwistle explains that just because the two are different does not mean they should be separated and that we have to use both our worldviews. ââ¬Å"Weaving together perspectives from psychology and Christian theology can help usRead MoreChristian Philosophy Versus Christian Worldview1294 Words à |à 6 PagesIntroduction Human perspective differs and leads to diverse worldviews. Several factors contribute to the creation of worldviews; the environment, experiences and most importantly the education that a human is exposed to. The question is often asked if there is such a thing as a write or wrong worldview, since it can consist of religious beliefs, political connections, and subjective opinions on life, love, family and friendship. These worldviews create philosophical questions regarding how society trulyRead MoreChristian World View1397 Words à |à 6 PagesEveryone has a worldview. This may be something we do not think about on the regular, but we all have one. A worldview is our set of beliefs used to understand the world. It shapes our thoughts on how we interpret reality, and forms our moral opinions. Our regular worldview is formed by almost anything secular, jobs, money, family even education. Then there is a Christianââ¬â¢s Worldview which would be our sacred doings. The Christian or Biblical worldview is based on the word of God. When the word ofRead MoreEssay Personal Worldview642 Words à |à 3 PagesPersonal Worldview Grand Canyon University HLT 310 Personal worldview Spirituality is defined in several ways as it pertains to different worldviews. Today we will look at the worldview as it relates to Pluralism, Scientism and Postmodernism. Pluralism is a worldview in which the society members structure their culture based on acceptance and diversity. These common traits all strive for the common good of all andRead MoreBiblical Worldview : The Natural World861 Words à |à 4 PagesBiblical Worldview Essay â⬠¢ Introduction To understand what Paul message is to its readers in Romans 1-8, one must understand the definition of what is a ââ¬Ëbiblical worldview.â⬠A biblical Worldview is defines as an overarching view of the world based on Godââ¬â¢s revealed truth, the bible, which directs our life in the world (Cascade Christian School P.1). Once the reader understand such biblical worldview then the passage of Romans 1-8 come to life by teaching us in the areas of Natural World, Human
Tuesday, May 5, 2020
External reporting issues in Accounting
Questions: 1.Peruse The 2016 Annual Report of The Company ? 2.Examine The Corporate Governance Report of The Company ? 3.The Company Best Serve The Interests of Users or Preparers of Financial Reports? 4.The Company in its Operating Environment Action ? Answers : Introduction In August 2002, ASX convened a corporate governance council which comprises of people who bring in a wealth of experience in all issues affecting various industries. The role of the council was to primarily issue recommendations on corporate governance practices that should be adopted by ASX listed companies. This report highlights some of the areas that the financial statements of Grain Corp Ltd revealed and what they mean to all stakeholders. 1. In relation to the current tax, Rule 13 establishes: that It is the amount that satisfies the company as a result of the tax assessments of the Tax on Profit for a year.Deductions and other tax advantages in the tax rate, excluding withholdings and payments on account, as well as tax loss carry forwards and actually applied thereto, will give rise to a lower amount of current tax (Christensen, Cottrell, Budd, 2016). From the above, it is deduced that the current tax coincides with the amount to be met applying the tax regulations; In short, the current tax will coincide with the net tax quota, which is obtained by lowering the entire tax (type of tax x taxable basis) on the amount of deductions and any other tax advantages to which the company is entitled (Gill, Chatton, Osgood, 2009). It is also clear from the above definition that the net tax loss carry forwards must be taken into account for the taxable losses of prior years and effectively applied in the latter, which reduce th e taxable income for the year and, consequently, the total and net contributions(Krambia-Kapardis, 2010). In order to have the necessary basis to carry out the process of consolidation of Financial Statements, it is necessary to define and approve uniform accounting policies taking into account the International Financial Reporting Standards (IFRS), Which include the IFRSs themselves; International Accounting Standards (IAS); And the Interpretations to IFRS and IAS, which have been formalized and in force in Australia (Hirschey, John, Makhija, 2004). For several years, the doctrine considers that the only accounting treatment of Income Tax that adequately respects the accrual criterion (1) is the deferred tax method. And more recently, the idea that the deferred tax method is the most comprehensive is that of the liability based on the statement of financial position (Krambia-Kapardis, 2010). As a general rule, the Income Tax charges the net accounting result that was considered accrued over a period. If this assessment were true, we would not be sharing this collaboration. The issue is that, based on a criterion of certainty and legality, the Tax Law departs from some accounting precepts and adopts its own rules of recognition and measurement of the components of the estate and, consequently, of the results (Jickling Janov, 2006). Let's review: the tax effects of most of the events recognized in the financial statements are included in the determination of the Income Tax for the same period. However, some economic facts that generate taxable or deductible amounts are reached by tax legislation in different periods. The case of certain economic transactions that will never be subject to the tax (2) and of those fiscal fictions that in no way will have accounting correlates . Consequently, differences arise between the accounting measurement of the assets and liabilities and the tax basis of such assets and liabilities. Those differences that occur at dif ferent times are called "temporary" and represent the cause that gives rise to deferred tax assets and liabilities. In short, that of deferred tax is a method of accounting for income tax whose conceptual basis is based on the criterion of income accrued, however taxable it may be in an earlier or later period. 2: a)In recent years, and more clearly in the wake of the current economic crisis, issues of Corporate Governance and are reaching a key importance in all types of entities, both in the business world and in the public administration. In a global environment of uncertainty such as the present one, an adequate treatment of these issues contributes to generate confidence in the market and to act in a more efficient and socially responsible way (Mallin, n.d.). The report on Grain Corp Ltd meets the requirements of ASX Listing Rule 4.10.3. This is because it comprises among the following items on the report. Periodic review and adaptation of these standards to the requirements or recommendations existing at any time; Collaboration in the preparation of the Annual Reports on Corporate Governance and in the Annual Reports on Remuneration; Preparation of remuneration policies for directors; Introduction and adaptation of the principles of corporate governance in unlisted companies(Joseph, 2009 ). Grain Corp Ltd has improved in terms of gender inclusivity in the board, According to a 2014 KPMG report, there are only 23% of companies listed in the ASX that have over 22% of the board as women. The company has a long way to go in terms of complying with gender diversity policy. However, according to the report there is a commitment by the company to increase the number of women both as Executive and Non executive directors. disclosure of corporate governance policy and practice in preventing corporate scandals Does the directory know what is happening around it? Do you really know what is happening in your company? The negative response to these questions has caused most of the problems. For anyone it is a mystery how crude they have been the years 2014, 2015 and part of 2016 in the matter of governance (Mallin, n.d.). They have been a perfect storm, which has triggered a crisis of great confidence as systematically evidence public opinion surveys. Given this critical scenario, we investigated what happened, seeking to identify preventive tools to activate early alarms and avoid corporate governance scandals. Hence, adherence of corporate governance policy prevents corporate scandals because everything is done above board. 3. The general user of the financial information can be classified significantly in internal users and external users. The IASC .Board believes that the financial statements thus prepared meet the common needs of the majority of users. This is because each type of user in particular makes economic decisions such as: Making decisions to acquire, preserve or sell shares or capital rights. To consider from a financial perspective the evaluation of the administrative management of being able to assume risks that benefit the economic situation of the entity. Evaluating the company's ability to pay the workload in a natural way and provide additional benefits to its employees. Evaluating the level of security in the protection of the funds provided to the company. Assimilating the tax burden according to the tax policies of each particular country. Establishing the amount of distributable profits and dividends that are considered to be payable.Based on macroeconomic statistical data, which al low the company to be able to establish parameters of performance.To regulate the activities of the company in particular or specific cases.Hence, Grain corp report serves its users well because it enables them to make decisions on all information provided. 4: The harsh operating environment has negatively affected various stakeholders of Grain Corp Ltd. Some of the stakeholders affected include the shareholders whose stock price has declined and also the dividend pay out(Rosenfield, 2009). Due to the harsh operating environment the creditors are also impacted negatively because of the reduced earnings. In my view, the annual report satisfies all the stakeholders there has been negative impacts such as low grain volumes in Eastern Australian region coupled with low exports. This basically explains why the company might be facing a difficult year(Suwardy Suwardy, 2010). References Christensen, T., Cottrell, D., Budd, C. (2016). Advanced financial accounting (1st ed.). New York, NY: McGraw-Hill Education. Gill, J., Chatton, M., Osgood, W. (2009). Understanding financial statements (1st ed.). [Rochester, NY]: Axzo Press. Hirschey, M., John, K., Makhija, A. (2004). Corporate governance (1st ed.). Oxford [etc.]: Elsevier JAI. Jickling, M. Janov, P. (2006). Criminal charges in corporate scandals (1st ed.). [Washington, D.C.]: Congressional Research Service, Library of Congress. Joseph, T. (2009). Corporate accounting (1st ed.). New Delhi: Tata McGraw-Hill. Krambia-Kapardis, M. (2010). Contemporary issues in accounting (1st ed.). [Bradford, England.]: Emerald. Mallin, C. Corporate governance (1st ed.). Rosenfield, P. (2009). Contemporary issues in financial reporting (1st ed.). London: Routledge. Suwardy, T. Suwardy, T. (2010). Understanding financial statements (1st ed.). Singapore: Prentice Hall.
Sunday, April 26, 2020
Facts, Fiction and Scholarship Essay Samples for College
Facts, Fiction and Scholarship Essay Samples for College Scholarship Essay Samples for College - Dead or Alive? An essay outline can help you organize the general structure of your essay. It has a particular structure. It is often the most important part of your application. Scholarship essay isn't a paper at which you can forgive yourself misspellings or formatting inaccuracy. Reference which you are attaching a copy of correspondence linked to your Federal Student Aid application along with copies of your latest tax returns. As a consequence, their scholarship applications become rejected. Wait until the day prior to your scholarship application is due to start drafting your essay. A scholarship essay is a significant document which is used in the processes of scholarship application. The Good, the Bad and Scholarship Essay Samples for College If you're asking for a scholarship or maybe to obtain admission into a program or school, the committee not only wishes to obser ve how well you're able to articulate your ideas, but also would like you to convince them which you deserve the scholarship or a spot in their program. A scholarship is a grant that functions as an aid for a student to have the ability to attain a particular amount of education. Especially, write the method by which the scholarship is able to help you continue your education including the financial conditions of your loved ones and how you'll have the ability to help them as well. Since the scholarship is for an education, an individual should consist of acquiring a great education as an important objective. Scholarship Essay Samples for College Explained Considering all the knowledge areas and tips that you're already mindful of in writing a scholarship letter, it is possible to easily put together all of the information that you must make sure you and your scholarship letter will stick out. The most important advantage of scholarships is that you receive money but do not ne ed to pay anything back like with loans, for example. In addition, you may download our free guide for more advice on the best way to come across scholarships to study abroad. If you're asking for a scholarship, odds are you're likely to should compose an essay. The Scholarship Essay Samples for College Game Thus, it's important to pay the college athletes who take part in such events because of their tremendous effort to construct the condition of the institution (Anderson, 2015). For instance, the NCAA Division I football championship happens on Monday nights. The college application procedure is competitive. Regarding financial advantages, NCAA and college methods make the most of college athletes. College application essay, is a significant aspect as it aids the panel, pick the best students that show the proper type of motivation, for placement into a few of their programs. Getting into one of the best colleges is step one towards a prosperous career. Separately, they benefit from loyalty and pride due to games. In some ways, it may also be regarded as a devaluation of the college degree. In this kind of situation you are the sole supply of information about your own personal reaction. There aren't any parameters to follow. To find access to a sample, you should do the next. Click the category, and you'll see all the available samples. What's more, it's your opportunity to spell out why you require money logically and reasonably. The reversal of hormone level within the body facilitates mood swing experiences. On the flip side, women are overwhelmed by emotions grounding on the social and physical effects of the menopause if they're not prepared to accept changes linked to the scene. The scholarships you find are likely to fit into specific themes that you must have the ability to identify as a way to save your family time, frustration, stress, and most significantly money. New Questions About Scholarship Essay Samples for College In today's society, it is nearly not possible to recognize an outstanding person to look up to as a hero. Your future is quite important. Remember that the man reading your essay wishes to give out money. The trick to writing a great essay is to help it become interesting, and the secret to that is to write about something you're passionate about. A Startling Fact about Scholarship Essay Samples for College Uncovered Conversely, provision of scholarship opens the chance to further maturation of career to acquire the experience required in leadership. Better education isn't only about getting jobs and techniques utilized for writing articles or developing statistical reviews or investing a good deal on prop erties. Anyway, the scholarship will give me the opportunity to advance my interpersonal skills at a greater level. Obtaining scholarship is just one of the greatest approaches to attain education and training to develop into a very good leader. Why Almost Everything You've Learned About Scholarship Essay Samples for College Is Wrong One of the major aspects about a college essay is, it ought to be grammatically coherent. Possessing another man reading the essay is vital. If you discover that it's difficult to compose essays, consider discussing the essay topic when recording the conversation. Getting conscious of common essay mistakes and the way to repair them can help you make an impressive scholarship essay. Even after you understand what the essay ought to be about, it can still be tough to start writing. The essay is your opportunity to tell your story. Scholarship essays are a significant matter. Writing a scholarship essay may not be a very simple job for many students. Scholarship Essay Samples for College Help! Make certain your font size is able to make your discussion uncomplicated to read. There are various letter documents and essay examples that are employed in the discipline of education. The margin which you will use in the document can play a huge part on the general look of the letter. The general format of your essay, for example, font size and margins, will solely count on the instructions offered to you.
Literary Analysis Essay Topic Ideas For Any Book
Literary Analysis Essay Topic Ideas For Any BookIf you are taking a literary analysis essay topic for any book, you should go to the Internet and look at the different resources that are available. Many people have had a successful journey but not all. By using the Internet, you can find out information about which books have been turned into movies, and which have not.Fact checking is a very important part of this process. You want to make sure that the author has actually written the book and that it is an accurate depiction of what he or she intended it to be. The other thing you want to do is to check out the basis of the research that has been done. If you have the time and the energy, you can hire someone to do it for you.But if you want to go at it alone, then there are plenty of resources available that will allow you to do this for yourself. You want to find a writer who you trust, and you want to talk to them about their background, experience, and even how they have writte n their first book. You want to ask them some questions to see what they are like as a person. That is why it is very important to do the research first.In addition to checking out the basis of the research, you also want to find out if the writer has actually completed the novel before turning it into a movie. It is probably best if you use the Internet to find out all of this, because you don't want to rush into your study, and you want to know for sure.You can also find out if the writer has any interest in film, and if so, how much of it do they actually write about in their book? If the answer is none, or just the fact check, then they could be taking an opportunity that is not really an option. It is your responsibility to weigh the options and the results of your research.You can find out a lot of literary analysis essay topic ideas for any book by doing this type of research. If you want to get the most out of the process, you want to think about what resources are available to you. You want to make sure that you use them to your benefit, but at the same time, you need to be realistic with them.If you want to do it on your own, then just find a writer who you feel comfortable doing it with. However, if you don't have the time, then you might want to contact someone to help you with your research. A literary analysis essay topic idea for any book can be found using this method, and you will be able to find out what resources to use and what types of books to read.
After you have tested the idea, you can put it in an article or write a report about it. You can also consult the people about it, as it helps you a lot. Cover Letter Research Paper - Does Cover Letter Research Paper Really Work?
After you have tested the idea, you can put it in an article or write a report about it. You can also consult the people about it, as it helps you a lot. Cover Letter Research Paper - Does Cover Letter Research Paper Really Work?The answer to the question above would be 'yes' if you really did a thorough cover letter research paper. You should always do research in case you intend to apply for an interview for the job of your choice. You need to be qualified for the job that you are applying for and research helps you in that process.Remember, research is very important, especially with a cover letter. Although it is a short document, the reason behind it is you need to highlight your strengths and eliminate those weaknesses.The first thing you must do is to write a short paper on the topics that you want to write about. Do not think that you can just look at any writing journal or look at books. The only requirement is that you have read the topic thoroughly and is familiar with it. It is highly important that you know the subject matter as well as the ideas. In order to do this, you will need to study a bit about the subject.Another great source of information is the internet. You can do research online regarding any topic, and if you can find a lot of sources and information about that topic, then you will get some knowledge. If you want to get more knowledge, you can ask for some help.When you are doing your cover letter research paper, the next step is to evaluate the idea you came up with. Evaluate whether it is viable or not. Do not be afraid to make mistakes; just be confident that the idea is worth the effort and cost.
How to Write a Sample ESL Essay
How to Write a Sample ESL EssayIn this article I'm going to give you some tips on how to write a sample ESL essay. In short, just follow my simple advice and keep your content factual and readable. You will also need to think about the vocabulary that you're going to use when you're writing your essay.When writing an ESL essay you need to be able to speak clearly. This is the only way that you are going to be able to communicate effectively with your essay. One of the best ways to ensure that you are able to keep your sentences clean and free from grammar errors is to take notes. However, if you find yourself not being able to write because you aren't listening to yourself, then you might want to think about having someone who can listen to you read it aloud to you.The biggest problem that most students face when they write an essay is that they don't really know how to structure their essay. In English you need to use structure when you're writing a paper. However, you should be abl e to vary the order in which you're using your sentences. So that means that you can also vary the structure of your essay, which will ensure that it's as effective as possible.So many students have this problem, because they make the mistake of writing their essay in a way that is going to force them to use the English language in a specific way. The problem is that people tend to write a lot in a rush, when they need to get it out quickly. Instead of going through each sentence in your essay, why not just think about which sentences are going to get you the most words out of you?Writing in English is going to take a lot of practice. It takes some practice to learn how to write a good essay, because there are so many different aspects that you need to consider. However, this doesn't mean that you should sit down and do nothing at all when you're first starting out. It's important that you're taking practice tests at least once a week, so that you're going to be getting some practic e on a regular basis.Your essay is going to be looked at very critically by your teachers. They will often be looking for some extra information or examples that you can use to support your arguments. For this reason, you need to make sure that you're using good examples and good written language whenever you're writing your essay.You'll need to include all the major topics that you need to cover in your essay. The last thing that you need to do is to just go around writing the whole thing in one sitting. If you don't find time to do this then you should try writing it over a period of several weeks, rather than in one sitting.
Friday, April 17, 2020
Oxygen Essays - Chemical Elements, Industrial Gases,
Oxygen Oxygen is one of the 92 known elements. An element is a substance that cannot be decomposed into a simpler substance by any simple means. Each of the 92 naturally occurring elements are therefore one of the fundamental materials from which everything in the Universe is made. The History of Oxygen On August 1,1774, Joseph Priestley examined the effect of intense heat on mercuric oxide. He noted that an air or gas was readily expelled from the specimen. To his surprise a candle burned in this with a remarkably vigorous flame. He called this new substance dephlogisticated air, in terms of the current chemical theory of combustion. On a visit to Paris in 1775 he related his discovery directly to Antoine Lavoisier. Immediately Lavoisier checked the results by accurate experiments and found that Priestley's dephlogisticated air actually combined with metals and other substances. Since some of the compounds he formed produced acids he regarded the dephlogisticated air as a acidifying principle and called it oxygen, derived from the Greek words for ?sour? and ?I Produce?. From his experiments Lavoisier recognized that air was composed of two main constituents: vital air or oxygen and azote (Greek for lifeless-now called nitrogen) which would not support life or combustion. From these facts Lavoisier developed the modern theory of combustion, and thus laid the foundation of modern chemistry. Forms of Oxygen Oxygen comes in a variety of forms. One of the more deadly forms of Oxygen is Ozone, O3. Ozone (O3), named for the Greek word for smell, is a poisonous, colorless and tasteless gas with a distinctive strong smell. Molecules of ozone are probably the source of the smell that can be detected close to working electrical equipment such as motors and TVs. If a vehicle with a catalytic converter is started cold, ozone can be detected in the exhaust fumes. Most ozone is found high in the atmosphere in a region of the stratosphere called the ozone layer. Here ozone performs a vital life-protecting role, absorbing the ultraviolet rays of the sun that would be harmful to both plant and animal life. Ozone is usually prepared by passing a silent electric discharge through oxygen. Because of its powerful oxidizing properties ozone is widely used for sterilizing water and for air purification. It also is applied in organic chemistry in ozonolysis, which is the reaction of ozone with unsaturated compounds such as the hydrocarbon ethylene. Oxides are a large and important class of chemical compounds in which oxygen is combined with another element. Nearly all the elements form oxides, which vary in properties according to their composition. Metal oxides are crystalline solids that contain a metal cation and the oxide anion, O-2. They typically react with water to form bases or with acids to form salts. Calcium oxide (CaO), for example, reacts with water to form calcium hydroxide [Ca(OH2)], a strong base, and with hydrochloric acid to form calcium carbonate (CaCl2), a salt. Nonmetals oxides are volatile compounds in which the oxygen atoms are linked covalently to the nonmetal atom. They react with water to form acids or with bases to form salts. Thus, sulfur trioxide (SO3) reacts with water to form sulfuric acid (H2SO4), a strong acid, and with sodium hydroxide to form sodium sulfate (Na2SO4), a salt. Amphoteric oxides contain oxygen along with cations such as aluminum, tin, or zinc; they may combine with either acids or bases to form salts. Aluminum oxide (Al2O3), for example, reacts with hydrochloric acid to form aluminum chloride (AlCl3) and with sodium hydroxide to form Sodium Aluminate (NaAlO2). Certain organic compounds react with oxygen or other oxidizing agents to produce substances called oxides. Thus, amines, phosphines, and sulfides form amine oxides, phosphine oxides, and sulfoxides, respectively, in which the oxygen atom is covalently bonded to the nitrogen, phosphorus, or sulfur atom. The so-called olefin oxides are cyclic ethers. Another place where oxygen is found is the atmosphere. The Atmosphere surrounding the earth is a mechanical mixture of gases. The most important of these gases are oxygen, nitrogen, and carbon dioxide. The relative proportions of these gases in the atmosphere are found to be remarkably constant. Oxygen is essential to life. It is odorless, colorless, tasteless, and slightly heavier than air. The
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