this experiment is to differentiate between a physical change and a chemical change. A physical change includes a change in the material without affecting its composition‚ such as the physical state change. However‚ a chemical change includes the change in the composition of the substance. The change in color‚ formation of a gas or a solid product‚ and the production of energy are the evidences of a chemical reaction‚ thus‚ of a chemical change. Materials Crucible tongs Evaporating dish
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Appendix APPENDIX 1 Chemical tests for functional groups Homologous series/ Typical compound Functional group(s) Alkanes CH3CH3 ethane C – C and C–H Alkenes CH2 = CH2 ethene C=C Chemical tests/Observations Add liquid bromine in ultraviolet light (or sunlight): White fumes of HBr liberated; decolourisation of bromine occurs slowly (a) Add Br2 in CCl4 at room temperature: Decolourisation of bromine occurs immediately CH2 = CH2 + Br2 → CH2BrCH2Br (b) Add acidified
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I realize that IB will one of the most challenging courses I will take before I enter college and I am not even in the program yet. It is a culture in itself. However‚ I am also a part of the music culture at EWHS where I am included in the Symphonic Band ‚ as well as the Mello- Aires and because both groups require the majority of my time‚ I am well versed in each culture’s rules and values. Both the IB program and the music program have similar standards‚ values‚ and traits to live up to‚ but
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NH3 H2O - NH4OH can be a very useful to the society because by keeping an eye out for this synthesis reaction‚ chemical technicians are able to identify ammonium hydroxide in water accessed by people and prevent people from being in contact with toxic water. Ammonia takes the form of gas at room temperature. It is a colourless gas with an irritating odour. Ammonias melting point is at -77 degrees Celsius and its boiling point is at -33.35 degrees Celsius. This covalent compound is corrosive to
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exchange. The detailed analysis follows up: • Initial preparation efforts and cost The Oslo Bors listing may be much easier and cheaper choice than the U.S exchange one. The financial policies and principles are not big problem since emg had already change its accounting from the Norwegian krona to U.S dollars. However‚ the U.S listing will cost more upfront legal fees‚ recruitment fees and underwriting expenses. Because the company do not know the regulation of U.S as well as they do about that of
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Name: AP Economy Review Packet QUESTIONS 1. Economics is best described as a. the study of how scarce material wants are allocated between unlimited resources. b. the study of how scarce labor can be replaced by unlimited capital. c. the study of how decision makers choose the best way to satisfy their unlimited material wants with a scarce supply of resources. d. the study of how unlimited material wants can best be satisfied by allocating limitless amounts of productive
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Food and Beverages at Southwestern University Football Games? Food and Beverages at Southwestern University Football Games Southwestern University (SWU)‚ located 30 miles southwest of the Dallas/Fort Worth metroplex‚ has witnessed tremendous growth in its football program. With that growth‚ fueled by the hiring of legendary coach Bo Pitterno‚ has come more fame‚ the need for a bigger stadium‚ and more complaints about seating‚ parking‚ long lines‚ and concession stand prices. Southwestern University
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The purpose of this investigation was to see if doing push ups affects one’s heart rate. It was found that the exercise that was performed did affect the heart rate. Therefore‚ doing push ups did increase the heart rate. If doing exercise increases one’s heart rate‚ then doing push ups affects the heart rate. This investigation deals with analyzing the effect on doing an exercise‚ in this case- pushups; will increase one’s heart rate. I have analyzed ten boys between the ages of fifteen and seventeen
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What were the most significant causes and effects of the Sepoy Mutiny 1857? A. Plan of investigation B. Summary of evidence C. Evaluation of sources D. Analysis E. Conclusion F. Bibliography What were the significance causes and effects of the Sepoy Mutiny of 1857? The investigation assesses the significance of the causes of Sepoy Mutiny of 1857. In order to evaluate the causes‚ the investigation evaluates different ways Indians reacted towards the English
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ECONOMICS Economic Problem * Unlimited wants‚ limited resources Economic Systems * Questions to answer: 1. What to produce? 2. How much to produce? 3. How to produce? 4. For whom to produce? * Criteria to classify economic systems 1. Productive resources owned by private individuals (private sector) or government (public sector) 2. Role of market forces of demand and supply in allocating resources‚ determining prices‚ distributing incomes 3. Role of government in production
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