Chemistry Aim: I am trying to find out whether the equation 2CuCO3 ® Cu2O + 2CO2 + ½O2 or the equation CuCO3 ® CuO + CO2 is correct for the decomposition of copper carbonate. Introduction: This is my background research, this information may help me when I am trying to see which equation is correct. I have used the book Chemistry 1 by OCR as my reference. Relative Atomic Mass: This is the mass of an atom of the element relative to the mass of an atom of carbon-12 which has a mass of exactly 12. Relative Molecular Mass: This is the mass of a molecule of a compound relative to an atom of carbon-12. Mole: This is the unit of an atom of substance. One mole of a substance is the mass that has the same number of particles (Molecules, Ions or Electrons) as there are atoms in exactly 12g of carbon-12 Avagadro’s Constant: This is the number of atoms or molecules in one mole of a substance. It is calculated using (L = 6.01 x 1023) I will also include the equation for number of moles and volume of gas formed. I shall use my class notes as my reference. Number of Moles of gas = Volume of Gas (cm3) = Volume of Gas (cm3) Molar Volume (cm3) 24000cm3 Volume of Gas = Number of Moles x Molar Volume (cm3) = Number of Moles x 24000 cm3 Planning: Copper has two oxides; Cu2O and CuO Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written for each possible reaction: Equation 1: 2CuCO3 ® Cu2O + 2CO2 + ½O2 Mol Ratio 1 : 0.5 : 1 : 0.25 Tot... ... middle of paper ... ... 64cm3 60cm3 0.33g 80cm3 64cm3 64cm3 Evaluation: From my experiment I have found that equation 1 seems to be the correct equation as my results show that it was almost equal every time to the predicted volume I calculated. When doing my experiment I could have changed some things which could have made the result more accurate. I should have waited until the temperature was at room temperature before taking a reading. I have calculated any inaccuracies I could have made; In weighing à accuracy or balance x 100 Average mass measured = 0.005g x100 0.33g = 1.52% In gas syringeà 0.5 x 100 62.7 =0.797%
Every chemical element or compound have specific properties that make them different than the other. However, these properties help us to understand every element or compound in which they can be used and how we can deal with them. These properties can be chemical properties which are defined as "that property must lead to a change in the substances ' chemical structure", such as heat of combustion and flammability ("Physical and Chemical…"). Also, these properties can be physical properties which are defined as the properties "that can be measured or observed without changing the chemical nature of the substance", such as mass, volume, boiling and freezing points ("Physical and Chemical…"). These two properties are related to each other. For
Food technologist are those who make sure food are produced legally and safely. They modify foods to make them fat-free and to make ready meals. They also work with newly discovered ingredients as well as existing ingredients to make new recipes.
S-PREP is a once in lifetime opportunity that helps to prepare those that want to pursue a career in medicine, science, technology, engineering, or mathematics. One of the greatest benefits of this program is that this all done before going to college. What caught my interest about this program is that this is the first program that was mentioned to me that had courses in neuroscience. During my Junior year at Hayes, I gained the opportunity to attend a science symposium at Iona College. It was thanks to my current AP Chemistry teacher, Brother Robert Chiulli, that I learned from the symposium that there are various fields in science. Neuroscience and nanotechnology caught my interest, considering that they sparked my long forgotten curiosity.
Chemistry Experiment How does the change in the electric current used in the electrolysis of copper sulphate solution affect the mass of copper deposited on the copper electrodes? Aim --- The aim of this experiment is to find out whether the mass of copper deposited on copper electrodes during the electrolysis of copper sulphate solution changes when the current used to electrolyse the solution is increased. Hypothesis ----------
In The Alchemist, Paulo Coelho, novel, Coelho talks about finding the Personal legend of your life which is the spiritual purpose for each person's life. very few people will actually achieve their personal legends in their lifetime. There are certain moments in a person’s life that will dictate what will happen for the rest of their life. The first choices that you make when you are younger determine, if and/or when you will find your personal legend in life. In Tangier, where Santiago was robbed helped him to be able to be set onto the right path to find his personal legend.
The novel “Alchemist’’ was very successful novel and it achieved commercial success as well. The author of the novel was Paulo Coelho, who is a Brazilian novelist and also a numerous for an international awards and Crystal Award.Paulo Coelho needed someone to publish his novel, so he got a big publisher named Rocco, to get his book publish and his next book as well. The novel ‘’ Alchemist’’ was the top seller in Brazilian at that time. The book The Alchemist was there an expression book, the theme to the book would be always follow your dream in the sense that there is a higher being pushing you towards that dream. And sometimes you may run across the bridge that you can cross but you would have to rebuild the bridge so you can cross that off turning back because you cannot cross the broken bridge.
In this inquiry the relationship between force and mass was studied. This inquiry presents a question: when mass is increased is the force required to move it at a constant velocity increased, and how large will the increase be? It is obvious that more massive objects takes more force to move but the increase will be either linear or exponential. To hypothesize this point drawing from empirical data is necessary. When pulling an object on the ground it is discovered that to drag a four-kilogram object is not four times harder than dragging a two-kilogram object. I hypothesize that increasing the mass will increase the force needed to move the mass at a constant rate, these increases will have a liner relationship.
The science by aid of which the chemical philosophers of medieval times attempted to transmute the baser metals into gold or silver. There is considerable divergence of opinion as to the etymology of the word, but it would seem to be derived from the Arabic al=the, and kimya=chemistry, which in turn derives from the late Greek chemica=chemistry, from chumeia=a mingling, or cheein, 'to pour out' or 'mix', Aryan root ghu, to pour, whence the word 'gush'. Mr. A. Wallis Budge in his "Egyptian Magic", however, states that it is possible that it may be derived from the Egyptian word khemeia, that is to say 'the preparation of the black ore', or 'powder', which was regarded as the active principle in the transmutation of metals. To this name the Arabs affixed the article 'al', thus giving al-khemeia, or alchemy.
have been used to drive all the wars of the last century but yet have
A boy named Santiago, who was a shepherd and travels around with his flock. He had met many people along with his travels, people included older woman who could interpret dreams, the old king, crystal merchant, the Englishman, and the alchemist. These people who help the boy pursuit his dream and given him tremendous courages.
The Chemical Revolution, the development of new pesticides and industrial chemicals was widely regarded as a positive step forward (ridding the world of POPs). At the time, they were seen as contributing positively to humans by combating pests and increasing crop-yields. (ridding the world of POPs) Today, these chemicals are known as persistent organic pollutants (POPs) and they pose significant threats to human health, wildlife and the environment. (ridding the world of POPs). This revolution resulted in an endless stream of synthetic chemicals and insecticides, “every human being is now subjected to contact with dangerous chemicals from the moment of inception until death.” (Emily Carson) Among impacts on wildlife and the environment, there
As human beings we have the capabilities of thought and reasoning, which is why we have evolved the way we have. However one can never be to sure that what we think and what we reason is really truth. And that idea can lead a person asking certain questions; What is the nature of existence? What is the nature of reality and it’s principles? but then more questions follow within These; What are we touching? What are we looking at? What are these things interfering and altering our lives? Are they the same in reality as they are in our mind? What are these substances? Are they even substances? If they are real then why are they, and what are they? Many great philosophers tackled these questions. Philosophers such as Plato, Aristotle, Descartes, Spinoza, and Berkeley. All of them came up with an idea of what substance is.
Solids, liquids, and gases are the three main, or fundamental phases of matter. Each one has a different density and a different level of stability. What determines the stability of each phase is the bond between it's atoms. The tighter the bond between it's atoms the more stable that phase of matter is. Solids are the most stable form of matter, followed by liquids, and then gases.