Rate of reaction between Hydrochloric Acid and Calcium Carbonate Essay

Rate of reaction between Hydrochloric Acid and Calcium Carbonate Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas. One way of following the rate of reaction at which it reacts is to measure the volume of carbon dioxide produced at certain time intervals during the reaction. CaCO + 2HCl CaCl + H O + CO =========================== Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Water + Carbon Dioxide Equipment --------- Delivery tube Conical flask Hydrochloric acid Calcium carbonate chips Burette Beaker Electric scales Measuring cylinder Tub Water Electric timer Goggles Retort stand The different factors that can affect my experiment are the temperature, the concentration of my reactants and the surface area, also adding a catalyst. We have decided to test different concentrations of hydrochloric acid for our experiment because it will give us sufficient results to make our evidence reliable. RATE OF REACTION BETWEEN HYDROCHLORIC ACID AND CALCIUM CARBONATE LOW CONCENTRATION HIGH CONCENTRATION I think that during our experiment, the higher the molarity of acid the quicker the rate of reaction will be, I think this because of the collision theory. If the solution is made more concentrated, there will be more particles in the solution. This makes collisions between important molecules more likely and will collide more often. At the beginning of the reaction, there are lots of reactants particles (and no products). This means a lot of productive collisions between reactants. As time goes on these reactants will become less and less (because reactants have been turned into products), therefore less collisions, so the rate of reaction will slow down. If the molarity of the acid concentratio... ...act same size we could use 2 chips in one experiment and get 1g then we could use 4 chips in another experiment and still get 1g. This meant that the surface area for the hydrochloric acid changed in each experiment for it to react and collide with. I could have stopped this by sieving so I would get chips that are of the same or close enough the same surface area. Overall my results are fairly reliable, yet could be subjective to change if better methods were available. If I was to do my experiment again I would make sure I would do it all on the same day and maybe change the limits of the products so that the results we got could be more accurate and we would have less anomalous results like the 2.5 molar experiment. However, if I did this experiment again I would expect the same results and patterns that I have got apart from the 2.5 molar and 3 molar experiments.

Benefits of Online Social Networking Essay

While there are risks inherent in online social networking, there are also many potential benefits. Social networking can provide opportunities for new relationships as well as strengthening existing relationships, whether your kids’ friends are close to home or across the world. It’s important to be vigilant when your kids are getting involved in online social networking, but it’s also good to encourage positive relationships through various avenues, including the Internet. Real-Life Benefits of Online Social Networking Kids can gain social confidence from interacting with other people online, which may help them feel more secure in new situations, such as going to college, joining a sports team, and meeting new friends. Because social networking—like everything else online—is constantly evolving, kids can become more familiar with new and emerging technologies, as well as increase their media literacy through exposure to many different types of online media that are shared by their friends. Many kids find support in online communities; this is especially true for kids who have unique interests or feel isolated. Encourage your child to find other kids who are interested in the same thing or may be dealing with similar issues. Online communities can be very diverse and expose your child to many new viewpoints, ideas, and opinions that she may not be familiar with. Kids tend to use social networking to augment—not replace—their real-world relationships, helping them learn to communicate in many different ways. Social networking is becoming an increasingly important method of communicating in schools and the workplace, so it’s good for your child to be prepared to communicate through sites like Facebook and LinkedIn. Keeping in touch with family members that live far away can become much easier through the use of online social networking. By sharing updates, photos, videos, and messages, family members can stay connected even if the live across the country—or the world. Social Networking in Schools Social networking is becoming increasingly important in schools—Facebook, Moodle, SecondLife, Digg, and other sites are often used by teachers to communicate with students or for out-of-classroom discussions. Youth can further explore topics that they’re interested in through online social networking. By making connections with other people who have the same interest, kids can learn and exchange knowledge with others they may not have had the opportunity to interact with. Teachers often take advantage of students’ social networking abilities to create class blogs, discussion forums, videos, and more. By collaborating with other students and teachers through online social networking, children are able to build stronger school communitie

Changes Throughout The Land By William Cronon - 1152 Words

Julian Baxter Dr. Hogge US History I H 10/2/14 Changes in the Land The possesion of land has proved to greatly amplify and draw out several different stereotypes and conflicts between societies in the world s history. From Many different accounts all over the world today there has always been a dispute over land. However other disputes shadow in that of the colonial New England settlers and the Native Americans, both virtually revolving their lives around this concept of land distribution. For the settlers it meant wealth and prosperity, for the natives it meant staying alive. William Cronon s book, Changes in the Land: Indians, Colonists, and the Ecology of New England, illustrates the differences between these two separate societies and describes what life was like during the period of exploration and settlement in the New World. There are several other facts or opinions that one could take away from this passage, but the three main points are differences in the Colonist and Native conceptions of property, as well as how cultural stereotypes and e ventual conflict emerged from mutual understanding of the land and use of property by each group. There are many reasons why the English settlers journeyed to the New World. Religious freedoms and reformation was the first reason. The next was the potential for settlers to start a new, prosperous life. The main reason people came over to the New World was for a quick and easy way to gain more wealth.Many crops were grown butShow MoreRelatedHow Cultural And Biological Diversity Are Not Incompatible1495 Words   |  6 PagesRelationships of Ethnic Groups in Swat, North pakistan† by Fredrik barth and â€Å"Changes in The Land† by William Cronon suggest that both cultural and biological diversity are not incompatible with each other. Does this mean that one does not affect the other other? Well, in Barth’s article he describes inter group relations that appear beneficial to all groups involved in the Swat region, North Pakistan. While in the other hand Cronon states a situation where one group almost completely removes another. Read MoreChanges Throughout The Lan d : Indians, Colonists, And The Ecology Of New England1177 Words   |  5 PagesThe book Changes in the Land: Indians, Colonists, and the Ecology of New England is written by William Cronon. He gives an interpretation and analyzation of the changes in the plant and animal communities in New England. This took place when there were changes in authority from Indian to European authority. It influenced the lives of Native Americans in terms of society and culture, which lead to major changes in the community. It uses ecological and historian ways to construct an analysis of theRead MoreChanges in the Land Essay1072 Words   |  5 PagesGiardina Mr. Mark Carson HIST 2055 11 Feb 2015 Changes in the Land Essay In William Cronon’s book Changes in the Land: Indians, Colonists, and the Ecology of New England, he discuses the ecological history of New England from the late sixteenth century to the early nineteenth century. He demonstrates how the New Englanders changed the land by illustrating the process of the change in the landscape and the environment. In the Preface Cronon states, â€Å"My thesis is simple: the shift from IndianRead MoreEcology of Maryland1280 Words   |  5 Pagesbiological reactions over more than 4 billion years now. In this relentless tardiness of geologic instance, the convection of the Earths mantle gave form to the planet (Cronon, 1993). The Middle Atlantic region of North American was shaped by the tectonic plate movements and climatic changes shaping the ancient oceans into lands. Water streams gave form to hills and deep valleys and rainwater broke big rocks into fine soil. It is interesting to note that while all this was taking place, MarylandsRead Mo reChanges in the Land Essay1519 Words   |  7 PagesReading Worksheet William Cronon, Changes in the Land History 2110 Indians 1. How did the Indians occupy the land? The northern Indians occupied the land much differently from those who lived in the south. The land was drier in the north, and the soil not as fertile, so agriculture was not a main source of subsistence. All Indians relied greatly on mobility throughout the seasons for survival. Those in the south were able to stay in one place for longer however because of the fertilityRead MoreProblems Caused By The Biophysical Environment2555 Words   |  11 Pagesbecause I can go on and on about what we do. Ever since humans were a part of this planet, a lot of things have changed. Some changes have been great. But other changes in the world hurt us a lot as well. The world has only about three percent fresh water and we are poisoning that water because of continuous dumping in the world’s lakes, rivers, and oceans. A lot of these changes that have occurred are mostly within how well we treat the environment. There are many examples as to how the Earth has beenRead More The Hudson RIver School Of Artist Essay1534 Words   |  7 Pagesand time all the way to California and the 1870s. During the period, that the school’s artists were active (c. 1820-1870) the nation was in the process of undergoing momentous political, social, and economic change. The works that the Hudson River School painters comprised reflected the changes that were taking place across the continent as well as the self-conceptualization taking place in an ever developing and ever changing America. Many consider Thomas Cole to be the father of the Hudson RiverRead MoreEssay on How is Sprawl Related to Landscape Change in Cities?3011 Words   |  13 PagesHow is Sprawl Related to Landscape Change in Cities? Over the past 20 years the 100 largest US urbanized areas have sprawled an additional 14,545 square miles according to the US Bureau of Census on Urbanized Areas. That was more than 9 million acres of natural habitats, farmland and other rural space that were covered over by asphalt, buildings and housing of suburbia. A major controversy in the efforts to halt the rural land loss is whether land-use and consumption decisions are the primaryRead MoreEssay on The Relationship Between Technology and Human Culture2844 Words   |  12 Pagesparticular cultural context as the result of changing needs or constraints. But once developed, a technology changes the culture that gave it birth. When a technology spreads to another culture, the cultural context affects the speed or way in which the technology is adopted and how it is used. The diffusion of technologies to other cultures changes those other cultures as well. The changes in culture that one technology creates may then influence th e development of another or different technologyRead MoreEssay about A Mercy Notes4980 Words   |  20 Pagesan Anglican curate in London.   Willard is also growing up, albeit in the New World, the son of a woman sent to the colonies for lewdness.      Jacob inherits a â€Å"patroonship† from a relative he’s never met.    At about the same time Jacob inherits his land, Senhor D’Ortega decides he will not live in Portugal’s colony Angola, but in Maryland, North America.   Also about the same time, a religious colony splits off from a separatist sect, moves, and becomes the Anabaptist settlement 7 miles from Jacob’s

The Things They Carried By Tim O Brien - 1301 Words

Austin Criswell Kathryn Ingram-Wilson LI 256-779 May 7, 2015 The Things They Carried In â€Å"The Things They Carried,† Tim O’Brien made note to the Vietnam War that was mixed with physical, mental and emotional that pressured the soldier’s carried. The overall method of display of this story integrated many different ways on the things the soldiers carried. In addition to the current, Tim showed North American nation the various reasons why and the way the troopers possessed these items one by one and together and the way they were associated directly and indirectly. The robust historical content in The Things They Carried helped emphasize the main focus of the story and establish a clearer understanding of details within the narrative†¦show more content†¦Shortly after that, he went into his writing career in 1973. The time period is around the late 1950’s to the early 1970’s. During this time period or nation is at war over in Vietnam, we are helping South Vietnam fight against North Vietnam an d its allies. It was the longest war in American history, over 2 million Americans served during the war and 1/3 was drafted while the other 2/3 volunteered. Out of these 2 million, 11 thousand of them was woman alone, and majority of the army were white, only 12.5% was African American. One in ten men was either killed or injured which totaled to 58,214 American deaths. The average World War II infantry man saw 240 days of combat in 4 year, were as a Vietnam infantry man saw 240 days of combat in a year. The soldiers only given 5 days of leave during the whole year, which lead to them having more combats days. While our army was fighting, it was not easy being back home either. Many people were against the draft as well as going to war in Vietnam, there was many protest against the war and draft itself. They would turn on the news to see young Americans being flown home in body bags, the average age was only 19 years old. As more Americans became impatience with the war and just wanted it to end, president Nixon signed a ceasefire in 1973 which ended the United States involvement in the war itself. The narrator of the story is Tim O’Brien who dealing with his deployment in Vietnam

Piaget s Impact On Education - 862 Words

Jean Piaget was one of the most influential researchers in the area of developmental psychology during the twentieth century. Piaget’s theory has impacted education and a focuses on developmentally appropriate education. Because of Piaget’s impact on education, curriculum, instruction and materials have been developed and are used by students in accordance with the student’s physical and cognitive abilities, along with their emotional and social needs (Ojose, 2008). Piaget was the first psychologist to make a systematic study of cognitive development; before his work, it was assumed that children were just less competent at thinking than adults. Piaget disproved this assumption and found that children think differently when compared to adults. Piaget’s Cognitive Theory Piaget’s theory differs from others in several ways. It is focused on children and not all learners, it focuses on development and not learning of information or specific behaviors, and it marks stages of development that have clear boundaries rather than a gradual increase in the number and level of difficulty in the behavior or concept (McLeod, 2009). The goal of the theory is to explain the mechanisms and processes by which the infant, and then the child develops into an individual who can reason and think using hypotheses (McLeod, 2009, p. 1). There are three basic components to Piaget’s theory; schemas, adaptation and stages of development. Piaget called schemas the basic building block ofShow MoreRelatedTheories Of Development : Piagets Theory Of Cognitive Development1363 Words   |  6 Pagesbehavior. Psychologist and philosopher Jean Piaget empirically verified, moving towards the cognitive development theory to provide the new perspective to the individual i n getting awareness about the developmental stages of the children. Just like Freud, Piaget thought that human development could only be described in stages. On the other hand, Piaget did not believe the learning and growth are linked with the repressed sexuality that Freud empathized. Piaget has given the cognitive developmental theoryRead MoreEducational Methods Influenced By Jean Piaget And Lev Vygotsky800 Words   |  4 Pagesresearch of Jean Piaget and Lev Vygotsky. Both of these men provided influential theories, which had a significant impact on evaluating children’s learning styles and abilities. After years of research and observation, Piaget determined that intellectual development is the result of the interaction of individual and environmental factors. He felt that as a child develops and always interacts with the world around him, knowledge was established. Through his observations of his children, Piaget developedRead MoreSociocultural Approaches And The Constr uction Of Knowledge1650 Words   |  7 Pagesare based on the concept that human activities take place in cultural texts,are mediated by language and other symbol systems,and can be best understood when investigated in their historical development.†(John-Steiner,V and Mahn,H 1996).While Jean Piaget was the towering figure in the science of cognitive development throughout much of the 20th century.His work had two complementary thrusts:constructivism and stage theory.†(Carey,Zaitchik and Bascandziev 2015) There are 6 elements that lead toRead MoreTheories Of Cognitive Development And Comment On Impact On Education1381 Words   |  6 Pagescognitive development and comment on the impact they have had on education. This essay will describe and evaluate two of the main three theories concerning cognitive development and comment on how they have impacted education. Cognitive development is the mental process in which we think and how we remember, problem solving and decision making. There are three main theorists that have a theory on cognitive development, Piaget, Vygotsky and Bruner. Piaget and Vygotsky are the two main theorist whoseRead MoreJerome Seymour Bruner Essay1350 Words   |  6 PagesJerome Seymour Bruner is an American psychologist who made signification contributions to educational, cognitive and developmental psychology. This paper will focus on who Bruner is, his main theories explained, plus a comparison between Bruner and Piaget and the effectiveness of Bruners theories in the classroom. Bruner was born and raised in New York City, Bruner graduated high school in 1933 and went on to major in psychology at Duke University; earning an AB degree in 1937. Subsequently, BrunerRead MoreThe Importance Of Play For Early Childhood Education Programs1699 Words   |  7 Pagesthe relevance of the main discourses of play for early childhood education programs This essay introduces the definition of play, its importance in early years. It also makes us understand the different contributions made by theorists in enhancing our understanding the value of play. It also examines the implications of play on children and early childhood services. We also discuss the origin and role of child-initiated play in a child?s early years. Play is defined as universal language and a powerfulRead MoreThe Strengths And Weaknesses Of Piaget s Cognitive Development Theory1356 Words   |  6 PagesJean Piaget is a key figure for development, focusing on cognitive constructivism – that being that we must learn from experience and development, building on knowledge that has already been developed. The strengths and weaknesses of Piaget s cognitive development theory will be discussed. Piaget suggests that development in children occurs in four stages: sensorimotor, preoperational, concrete operational and formal operational. During the Sensorimotor stage (between birth and the age of two)Read MoreJean Piaget And Marie Montessori1124 Words   |  5 Pagesbiography of Jean Piaget and Marie Montessori. In addition to a biography it compares and contrast the two educators. One was more focused on the development of children, while the other specialized in the way children learn. They both were crucial components in the development of how teachers and professors educate their students regardless of their age. There are many people that have made a great impact on education throughout history. Two of the more prominent educators are Jean Piaget and Marie MontessoriRead MoreInfluential Theorist And Child Development : Who Are Capable Of Inventing New Things? Essay1214 Words   |  5 Pages Slinger HPC 3OR September 17th, 2016 Influential Theorists In Child Development: Intellect, Jean Piaget (1896-1980) The goal of education is not to increase the amount of knowledge, but to create the possibilities for a child to invent and discover, to create men who are capable of inventing new things. Jean Piaget is an influential theorist in child intellect development. Piaget insights society on the importance of not learning, but thinking, his thoughts/studies give a furtherRead MoreDevelopment Of A Child s Social And Emotional Development1377 Words   |  6 Pagesunderstanding, and how they regulate their emotions from birth through late adolescence. Piaget is one of the first people to look at developmental theory and through her theoretical developments, the foundation for modern day developmental theory was laid. The Key concepts of Piaget’s theory are vital in understanding many of the contemporary developmental theories today. One of the key theoretical concepts developed by Piaget is adaptation ‘adapting to the world through assimilation and accommodation (Atherton

Why gun control is worse in the US than other countries free essay sample

America has become better known for Its massive amounts of firearm violence, including murder, suicide, and mass shootings. In 2011 there were 467,321 people victim to crimes committed with firearms. An average of 30,000 people are killed by guns each year, and more than 30 people per day are murdered, along with the 268 people shot per day. Half of these deaths are people ages ranging from 1 8 to 35, and a third are ages 20 and below; making homicide the second leading cause of death within the ages 15 to 24. However, I believe that the reasoning behind these statistics Is the easy access to guns as well as how the media displays the violence to be a commonality. Guns can be purchased in a variety of locations such as Wallmart, K- Mart, or even online auction sites; which make it effortless to obtain a firearm for any rationale. This kind of easy access establishes a lack of control throughout the United States in relation to guns. We will write a custom essay sample on Why gun control is worse in the US than other countries or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page There are 283 million guns in civilian hands which greatly outweighs the 897,000 guns possessed by police. These firearms are acquired sold. Along with this tremendous amount of firearms being sold, there Is not an adequate background check to evaluate the buyer. If guns are bought through private sales, the consumer is not required to pass a background check, this includes criminals, felons and people with mental disorders. Not only is there easy access of guns to adults, there is also an extreme accessibility given to children. There are guns specifically created for kids, so that its easier for them to use. There was an Incident In May of 2013 where a five year old boy shot and killed his two year old ister In Kentucky using a rifle he had found In their living room. This rifle was the boys first rifle bought for him by his parents; which was a firearm particularly designed for children. While the majority of adolescent shootings are accidental, every gun in the hands of a child must first pass through the hands of an adult. (l) The isolation of firearms to children and lack of protection is greatly inadequate evidenced by the law that declares only 9 states In America to use trigger locks, which are better known as a gun safety because they make a firearm more difficult to shoot ithout undoing the trigger lock. Therefore, If the accessibility of firearms Is essentially absent when it comes to kids, there should be some way to educate them in order to prevent accidental shootings committed by adolescents. Directly following the tragedy of September 1 lth, Wallmarts gun sales increased by 70%. This is due in part by the access to firearms but more by the panic spiraling throughout America, which Is further provoked by media coverage. Even during times of decreased crime, the televised reportage Increased by 600%, leading to an Increase of fear. The media gives an impression of an increasing crime rate, along with the idea that crime is more common that it truly is. They also insinuate that the most common victims of gun violence are elderly, women and white people. However, while the media delivers a TearTul Image 0T murderers ana vlctlms, tney portray tne pollce to De more potent than they are; excluding any criticism toward them due to the fact that 90% of media covered crime is solved. (2) Along with the praise given to police, the media is greatly focused on the United States military which honors people who have encountered heavy combat and severely violent situations. While watching the news, young boys and girls see someone on television that they want to be, which leads them to play with fake weapons and engage in artificial combat games. Even though they would be playing with dummy guns, it creates a real life simulation which they become accustomed to and as they get older they dont realize the severity of these firearms. Then, when they come into contact with a real gun at a young age they dont understand the onsequences that follow with the use of a weapon. Even with the substantial amount of gun violence, the media manages to exaggerate it in the United States.

To Depression free essay sample

I have never spoken words to you because I was afraid you would not listen. That, and ever since you entered my life, you have pushed me and pulled me and drained me of strength, and I fear this confrontation may set you off again. However, there are things that need to be said and I will not wait one more dreary night to express them. Please listen to these words, for I have not asked anything else of you. I don’t remember how you came into my life, perhaps because of your predatory nature. Your footsteps trailed behind me in the halls at school, the sidewalks that snake around my neighborhood, and eventually up the stairs of my own home. I am not here to deny the security you have provided me with. Since the day you stepped close enough to send chills down my neck and whisper your promise, I have had something to rely on, something constant. We will write a custom essay sample on To Depression or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page You promised me you’d never leave, and I found comfort in that. It was just you and me, and no one else. My friends would try to strike conversation but you’d always interrupt. Thanks to you, I hardly see those dear friends anymore and I know that if I ever try to, you will give me a cold shoulder. You said I don’t need to be loved, that I don’t deserve it.My mother would knock on my bedroom door, only to hear silence like every other time before, and I’d be curled on my side, shivering from your cold stare and hoping that I could fade into the darkness surrounding me. I hated it when you pushed me into the bathroom and left me crying on the tile floor for three hours. Even worse, sometimes you drained my feelings, locked them away and left me numb. I’d play music, feel nothing, look through old photographs, feel nothing, talk to fake friends, feel nothing, then resort to staring at the ceiling as my body lay prostrate on the wood floor. Do you remember that night when my mom left in frustration and you locked the car doors and peered through the window as I cried hot tears? Do you recall the heaving and gagging as I slid two fingers down my throat? You held my hair back and told me keep trying, you’re almost there. Do you remember the sleepless nights, the tossing and turning, the nightmares that were better than reality?One night you kept me up with knocks on my bedroom window, whispering, It’d be so easy. I’ll even open it for you. I pushed my blotted face into my pillow and ignored you. I know you didn’t like that because at midnight a few nights later, you sealed a plastic bag with little red pills and handed it to me, saying, I’m just trying to help. I no longer believe that you want to help, for if you did, you would not have encouraged me to hate myself and shown me such a black and white world. I do not want to share any more nights with you, I do not want to hear your whispered lies or torturous temptations, nor feel your eyes burn into me as you watch the pain eat me alive. Without you, maybe I can learn to love myself and accept the love of others that I have rejected ever since we met. I know this is hard for you and I am sorry to shock you with this news, but I do not need you any longer. Don’t worry, though, I will never forget you.The scars across my stomach are some of your most beautiful work and they will remind me of the long nights we shared. I will not miss those nights, but instead sleep peacefully knowing you are not at my bedside any longer. I will wake up in the morning and smile because I am still alive, and then I will smile a little more, remembering how it always made you cringe. My new found happiness will prove that I am truly breaking free from you.