CHEMISTRY PROJECT INVESTIGATORY PROJECT ON: CAFFINE CONTENT OF TEA About caffeine: Caffeine is a naturally-occurring stimulant‚ found in several plants. Caffeine is water soluble‚ and is extracted into the brewed cup when preparing tea‚ coffee‚ or other caffeinated drinks. The most well-known plants containing caffeine are the tea plant‚ Camellia sinensis‚ coffee‚ yerba maté‚ and guayusa. Although tea is known to have a number of health benefits‚ heavy caffeine use is known to have unpleasant
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celebration to mark specialoccasions. The thrill and excitement generated by fireworks‚brightening the night sky and immersing it with vivid displays ofcolour and technicality‚ which makes them a crowd pleaser. Behind all the excitement of fireworks‚ chemistry plays an importantrole in creating the vivid colours we witness lighting up the sky. Theactual chemical reactions that take place in the explosions requirethe use of oxidisers‚ reducing agents and binders. The additions ofvarying metal chlorides
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BTEC – Level -7: Extended Diploma in Strategic Management and Leadership Westford – Assignment Tasks Unit 11:Strategic Quality and Management Systems Instructor Information | | ------------------------------------------------- ------------------------------------------------- ID: …………………………………………….. ------------------------------------------------- Class (Course): Extended Diploma in strategic Management and leadership ------------------------------------------------- Section
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Jashandeep Gill Gammellos Chemistry Density is one of the fundamental principles of physics. Density is the reason why a plank of wood floats on water while a piece of metal several times smaller will sink. Density of an object is measured in g/cm³ or g/cc. The equation is D=M/V‚ D being the density of the object‚ M being the mass of the object‚ and V being the volume of the object. Mass is the space an object takes up. It is the amount of matter present in an object. Mass is measured using
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Another friend of Libra Dexter Patrick S. Baltazar Pre-test: Chemical balancing Instruction: Balance each chemical equation by adding a correct coefficient to it. Question 1 __ SnO2 + __ H2 → __ Sn + __ H2O Question 2 __ KOH + __ H3PO4 → __ K3PO4 + __ H2O Question 3 __ KNO3 + __ H2CO3 → __ K2CO3 + __ HNO3 Question 4 __ Na3PO4 + __ HCl → __ NaCl + __ H3PO4 Question 5 __ TiCl4 + __ H2O → __ TiO2 + __ HCl Question 6 __ C2H6O + __ O2 → __ CO2 + __ H2O Question 7 __ Fe + __ HC2H3O2 → __ Fe(C2H3O2)3 +
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Experimental Chemistry In this topic‚ you will learn: www.revision-notes.co.cc Hazard Warning Labels www.revision-notes.co.cc Measurement: Mass‚ Volume‚ Time and Temperature www.revision-notes.co.cc www.revision-notes.co.cc Collection of Gases www.revision-notes.co.cc Identification of Gases www.revision-notes.co.cc The Particulate Nature of Matter In this topic‚ you will learn: www.revision-notes.co.cc States of Matter Kinetic Theory www.revision-notes
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Chemistry of Fireworks By Anuradha Sahu Everyone enjoys the amazing firework shows on the Fourth of July with the beautiful vibrant colors and sparks every year. Fireworks have been part of this world for a very long time. They have been used for enjoyment and for signalling purposes. Every culture has their own significance and use of fireworks. But all fireworks have something in common; the chemistry that makes them work. No matter where you find them‚ they are made up of the same compounds
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A. Role of Chemistry in Society Applications of chemical science have contributed significantly to the advancement of human civilization (1‚ 2‚ 3). With a growing understanding and ability to manipulate chemical molecules‚ the post-World War II chemist was considered a societal problem solver. They synthesized crop-enhancing agricultural chemicals to ensure a constant and viable food supply. They played a significant role in the eradication of deadly diseases by developing life-saving pharmaceuticals
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Chemistry and Us The world is surrounded by so many things and everything is made of chemicals. Chemistry is very vital because it helps us to know the composition and changes of matter. Every single day of our life passes through chemistry in many ways. Human body works through the chemical reactions happening inside it. When we breathe‚ eat and sleep there’s still the presence of chemistry. The oxygen and foods we take helps our body to work. Exchanges of gasses‚ breaking down of foods we
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they can not exist apart. Plato another greek philospher believed the opposite as Aristotle. Also plato was Aristotle teacher at the Acadamy at the time. It wasent untill 2000 years after no one questioned the theory of atoms‚ untill the early 1800’s. John Dalton was born in 1766 in Cumberland‚ England. Dalton made many experiment strictly to atom study even though he had no idea what is was. He is most known for the extensive research on atoms. He proposed a table of atomic weights for the number
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