Temp labreport
How Temperature of HCL Effect Rate Of Hydrogen Produced Aim:- To determine how temperature affects the rate at which the reaction between Magnesium ribbon (Mg) and Hydrochloric acid (HCl) takes place. Introduction:- The rate of reaction can be affected by a number of factors: temperature, concentration, adding a catalyst and surface area. The one that I am going to be investigating and explaining about is temperature. Changes in temperature change the kinetic energy of the particles and hence the numbers of successful collisions with enough energy to break existing bonds and make products. For a reaction to take place, molecules must collide with each other. When they do so, they must possess enough energy to break the intermolecular bonds and hence, cause a reaction. The two theories that affect temperature and the rate of reaction are the kinetic theory and the collision theory. The kinetic theory clearly states that the positioning and movement of particles in a substance increases if the temperature increases. Therefore, increasing the temperature increases the energy between the particles and makes them move around a lot more and collide more often. Hypothesis: - The rate of reaction has a positive relationship with the temperature of the Hydrochloric Acid. Apparatus:- ) Test tube 2) Rubber tube (a.k.a. delivery tube) 3) Measuring cylinder X2 [1-10ml, 1-100
An investigation into the effect of light intensity on the rate of photosynthesis of Canadian pondweed (Elodea canadensis)
An investigation into the effect of light intensity on the rate of photosynthesis of Canadian pondweed (Elodea canadensis) Planning Scientific knowledge and understanding All green plants need to be able to make their own food. They do this by a process called photosynthesis, which means, "making things with light." Photosynthesis is a series of organic chemical reactions by which green plants produce glucose and oxygen from carbon dioxide and water. It occurs only in the presence of light, and takes place in the chloroplasts of green plant cells. Land plants get carbon dioxide from the air. Water plants get carbon dioxide from water (carbon dioxide in the air dissolved into water). Photosynthesis creates oxygen and sugar. Oxygen is released into the air and used by all animals, including humans, in order to respire. Sugar is used by the plant to respire or store them inside their body. The overall chemical equation for photosynthesis can be expressed as: Plants convert the light energy into stored chemical energy. Photosynthesis is possible because green plants contain an energy-capturing substance called chlorophyll. The plant gets its green colour because chlorophyll is green. Light energy drives photosynthesis. The chlorophyll captures the light energy and uses it to build carbohydrates from simple raw materials (water, carbon dioxide and minerals). The raw
Persuasive Speech - Poverty
The gap between the world's rich and poor has never been wider. While wealthy individuals are relishing in a lavish life of luxury, millions are being forced to endure an insufferable daily reality of poverty, conflict and lack of food. For these disadvantaged people, the hunger is unrelenting and the desperation is overwhelming. The time for a drastic change has arrived. It is up to you and I to make a difference before a significant proportion of the world's population drown in an ocean of poverty. We must save lives. Shockingly, a child dies every three seconds from AIDS and severe starvation. I'm sure you'll agree with me when I say that this infant mortality rate is unacceptably high. Something must be done in order to help countless families escape the famine pandemic. Unsurprisingly, there is sufficient food in the world to cater for everyone's needs. So why do so many find themselves ensnared by extreme poverty? Millions of people worldwide are trapped on an incessant downward spiral, frenetically fighting for food, education...and their lives. These people lack money; they are unable to purchase enough food to nourish themselves and their families. Inevitably, this continuous malnutrition leads their physical and mental condition to deteriorate, therefore decreasing their ability to work. With no employment, their finances continue to diminish, leaving only one
Coursework Assignment: Creative Writing
Fallen Reflection And there he was, a boy of five in the middle of the forest clearing. He ran daintily, in his grass-stained rags, barefoot and without a care. He was careful not to trample over any of the flowers, and smiled to himself as he passed and saw his reflection in the small, clear pool of water. In his dirtied hands, he held a twig which he threw up into the air every ten steps or so, his auburn hair ruffled by the silent breeze. He stopped abruptly next to the pool of water, and his smile slowly slipped away as the water clouded and ripples formed, although nothing had touched the surface. He kneeled down next to the pool of water, and his face became emotionless, as if he no longer knew what he was doing as he stared into the pool's depths. He saw her, and his hand swept through the air and closed on a flower. Its petals were delicate, white and radiant with light. It had not yet blossomed to full magnitude but was graceful and beautiful beyond comprehension. He pulled on the stem gently, easing it in one smooth action out of the dirt and into the air, breathing in its scent. * * * * * The young girl screamed. Screams that filled the silent night air, screams of anguish and relief. And then, she was no more. She lies inside a coffin made of wood, atop a hill. Her gravestone bears no words. Her arms are crossed over her chest and she holds a book, beneath
Sainsbury's organizational structure.
Task 3 (E4, C2, A1) Sainsbury's organizational structure Businesses are structured into different into ways according to the way they operate and according to their culture. The structure of business can affect the way it works and performs. You need to understand the differences between the following types of structure: * Tall * Flat * Matrix * Hierarchical Flat and tall structure:- The term 'scalar chain is a rather old fashioned one and stems from the days when large organizations were bureaucratic, with lots of layers between the top and bottom. Scalar chain refers to the number of levels within the structure or hierarchy of an organization. The scalar chain set out the authority, responsibility and the framework that determined superior and subordinate relationships. The idea of setting out everyone's role and position is to make it clear who is responsible for what, and that there is clear line of authority. Matrix structure:- A matrix structure can be used to combine the grouping method we have identified. In such a matrix it is probable that each member of the organization will belong to two or more groups. A matrix is thus a combination of structures, which enables employees to contribute to a mix of activities. The matrix enables the organization to focus upon a number of aims at the same time, and gives it the flexibility to respond to new markets where
Myocardial infarction
Case Study 2006 Myocardial Infarction Sharon Thomas Waitakere Hospital Abstract Of This Case Study Have you ever wanted to know what a Myocardial Infarction is and what its all about. Read on and find out through my eyes, about a patient I was caring for - what happened to him in both his body and mind. The following will show what a Myocardial Infarction ( MI ) is, what happens in the patients body and what care is involved by the medical and nursing teams. All of this to ensure my patient would walk out of hospital and again feel like productive member of society that he most certainly was before his cardiac event. Also within the body of this case study will be evidence based articles to support statements made. Congruent to this, will be reflection on how all that transpired with this man affected me and how my nursing practice has developed because of it. This patients health related journey and the anonymous intimacy that took place, came to a happy conclusion for both nurse and patient. Judith Christiansen's Nursing Partnership Model was published in 1990 and was developed in response to the knowledge gaps in the nursing system in New Zealand ( Taylor, 1995 ). This partnership model is a theoretical framework for nursing practice. It has 3 major concepts - these being nursing partnership, the passage and the context. Anonymous Intimacy is one of 3
Ma Vacance (My Holiday)
<<School_Name>> Le collège qui s'appelle <<School_Name>> était construit en 1942. Au début, il y avait 100 élèves et cinq professeurs. Pourtant, maintenant il y a neuf cent élèves, cinquante professeurs et quarante-huit classes environ. Le collège fait 200 mètres sur 300. On y peut trouver beaucoup de plants et d'animaux exceptionnels dans leur réserve de faune. Les élèves de <<School_Name>> ont cinq leçons par jour. D'habitude un élève a trois cours le matin et deux cours l'après-midi; généralement, un cours dure une heure mais rarement, s'il y a une interruption (comme un exercice d'incendie), il dure plus petit que habituel. Au collège, un journée typique est: COURS 1 9h10 - 10h10 COURS 2 0h15 - 11h10 COURS 3 1h30 - 12h30 COURS 4 2h35 - 13h30 COURS 5 4h15 - 15h15 Lundi ----------> L' ANGLAIS L'EMT ----------> LA GÉO LE FRANÇAIS ----------> ----------> LES MATHS Mardi ----------- L' ANGLAIS LES TEXTILES TION - LES MATHS LA CITOYEN-NETÉ ER----- ----------- LE SPORT Mercredi L'APPEL LA PHYSIQUE LA DESSIN RÉCRÉA LES TEXTILES LE FRANÇAIS DEJEUN L'APPEL L'HISTORIE - GÉO Jeudi ------- L' HISTOIRE LES MATHS --LA LA RELIGION LA BIOLOGIE ---LE ------ L' ANGLAIS Vendredi <---------- LA MUSIQUE L'ART DRAMA-TIQUE <--------- LA CHIMIE L' HISTORIE <----------
Are Blue-Green Algae Bacteria?
ARE BLUE-GREEN ALGAE BACTERIA? Russell Nash Blue-Green Algae, or Cyanophyta, are simple organisms that are believed to be the evolutionary link between bacteria and green plants. Fossils that are over three billion years old have been discovered in sediments and are concluded to be one of the first organisms to release oxygen into the atmosphere. Today, Cyanophyta are abundant throughout the world, found in salt marshes, on tree trunks, in fish tanks etc. Besides the typical bluish-green colour, Cyanophyta can vary from a blackish-green to an orange-yellow. As well as providing an evolutionary link, Blue-Green Algae serve an integral part of our lives with its importance in food supplements as well as its ability to cause economic damage via algal blooming. In this essay I aim to show the similarities and differences between Cyanophyta and bacteria using points of comparison, to answer the question whether Blue-Green Algae can be classed as bacteria. Blue-Green algae are prokaryotic, unlike the rest of the algae family, which can also be said for bacteria. Most of bacteria and Cyanophyta can only be seen through a microscope because they have only one cell and are around 1µm in diameter. In both bacteria and Cyanophyta, the cells have rigid walls. Bacteria have external flagella, which aid movement. Cyanophyta never have flagella. The DNA is able to float freely in a
Chemistry Investigation on neutralisation reaction.
Chemistry Investigation on neutralisation reaction Plan Neutralisation is the reaction that occurs when an acid has its acidity, that is its hydrogen ions removed by, another chemical containing OH- hydroxide ions. Chemicals that can cancel out an acid in this way are: bases (metal oxides or hydroxides), alkalis (bases that dissolve), metals (e.g. magnesium) or metal carbonates (e.g. marble chips) All of these have a similar way of removing the hydrogen from the acids (they swap it or their metal atoms) but the reactions are quite different. They will all get quite hot if the acid is strong enough, but only the last two will make bubbles. Metals form hydrogen gas, carbonates make carbon dioxide. All of them will leave a neutral chemical after the reaction has finished, if all the acid has been used up. Titration is a technique used to calculate the concentrations or amounts of substances. In an acid base titration you may have an acid that you don't know the concentration of, and a base whose concentration you do know. The technique is to measure out accurately a volume of the alkali of unknown concentration into a flask, and fill up a burette with the acid. Add some indicator solution to the acid in the flask, so that when all the acid has reacted with the base, there will be a colour change. The burette is graduated. You then open the tap on the burette and let the acid
Write about some of the ways Fitzgerald tells the story in Chapter 1
Fitzgerald uses a first-person retrospective narrator in Nick to allow the employment of a partially-involved story combined with his reflective perceptions on situations. Fitzgerald builds Nick's perceptions as fickle, having him claim 'I'm inclined to reserve all judgements' yet quickly contradicts this trait as he tells 'the intimate revelations of young men' are 'marred by obvious suppressions'. By Fitzgerald doing this, the audience are given an immediate opinion on Nick, realising he is likely to be inconsistent and an unreliable narrator. Fitzgerald highlights this by his ambivalence towards Gatsby, having him claim 'there was something gorgeous about him' yet describing his 'unaffected scorn' towards him. Fitzgerald also makes it clear Nick is a self-conscious story teller, telling himself 'after boasting this way of my tolerance' to allow the basis of Nick's reliability to be questioned throughout the novel. Fitzgerald has Nick go over what he is written to make it seem obvious that he is selecting events and words, such as claiming Gatsby 'had vanished' to make the chapter seem more dramatic. As the reader currently knows little about Gatsby's character, Nick's unexpected description of his disappearance at the end makes Gatsby seem more gripping, building the reader's anticipation of his entrance. Therefore, any of the events throughout the chapter are to be
