repairing damaged tissues... Animals cannot carry out photosynthesis‚ so they eat the plants to obtain food‚ hence‚ energy. For that reason the energy for life comes from the sun. 2. Explain what is meant by thermal pollution and discuss the implications for aquatic life. (3 marks) Thermal pollution is a discharge into a river or lake of a lot of hot water which is enough to significantly (2°C to 5°C) increase the temperature of water. This abnormal increase in temperature is potentially harmful
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Nuclear Chemistry Nuclear science is the study of sub-atomic particles and their function in various subjects. A nucleon is the collective name for the two components of the atomic nucleus: the neutron and the proton. Isotopes are any of the different forms of an element each having different mass numbers‚ which give the total number of nucleons. The major fundamentals of nuclear chemistry include radioactive decay‚ the nature of fission and fusion‚ and mass defect. The decomposition of the
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Question: What Is the Importance of Chemistry? What is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here’s a look at the importance of chemistry and why you should study it. Answer: Chemistry has a reputation for being a complicated and boring science‚ but for the most part‚ that reputation is undeserved. Fireworks and explosions are based on chemistry‚ so it’s definitely not a boring science
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Chemistry in Photography Background A photograph is an image made by a photo-chemical reaction which records the impression of light on a surface coated with silver atoms. The reaction is possible due to the light-sensitive properties of silver halide crystals. Equation form for silver halides: Ag + + e - Ag Species produced include: Ag2+‚ Ag2o‚ Ag3+‚ Ag3o‚ Ag4+‚ Ag4o In 1556‚ the alchemist Fabricius was the first to discover that light can photochemically react with these crystals to
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Running head: Organic Chemistry Tamanna Ashraf Palm Beach State College Principle of Chemistry Ceravolo‚ Joseph MW 11:00am-12:15pm February 6th‚ 2011 We all are living in a science world. Everything has some kind of reaction going on in our living area. It is just we do not get to see or realize that where n how we having our life much easier than it used to be. In these writing assignments‚ the topic is about the organic chemistry. In organic chemistry‚ we all have different kinds of compounds
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Polymer Chemistry Classification of Polymers – Notes prepared by The most common way of classifying polymers is to separate them into three groups - thermoplastics‚ thermosets‚ and elastomers5. The thermoplastics can be divided into two types - those that are crystalline and those that are amorphous. You may click on the words in the diagram below to learn more about these classifications. Thermoplastics Molecules in a thermoplastic are held together by relatively weak intermolecular
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Regents Chemistry Quarter 1 Midterm Review 1. The percent by mass of oxygen in Na2SO4 (formula mass = 142) is closest to 1) 11% 3) 45% 2) 22% 4) 64% 2. Given the unbalanced equation: __Al(s) + __O2(g) → __Al2O3(s) 3. 4. 5. 6. 7. balance the equation using smallest whole number coefficients. The percent by mass of aluminum in Al2O3 is approximately 1) 18.9 3) 47.1 2) 35.4 4) 52.9 What is the approximate percent composition by mass of CaBr2 (formula mass = 200)
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Food Chemistry Journal From raw food to brand label grocery. Why Food Chemistry? I am passionate about food‚ I love discovering new food‚ experimenting with taste‚ play with colors and learn the benefits and why our body needs certain nutrients. Before coming to college I did 2 years of full healthy dishes and read all over internet and books new ways to introduce new nutrients to my diet. During this 2 years I lost weight but except for that I felt clean from the inside‚ more energetic and happier
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What You Need To Know for the Chemistry Regents Exam The Test The Chemisty Regents Exam is broken down into three sections: Part A: 35 mulitple choice questions from all units covered over the course of the school year. Part B: Approximately 25 questions‚ with a mix of short answer and multiple choice. Questions focus on the Reference Tables‚ graphing‚ and laboratory experiments. Part C: Approximately 15 short answer questions‚ most broken down into smaller parts. This is often an
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The importance of chemistry‚ or any other area of study‚ depends entirely on how relevant it is to some desired outcome. If you wished to create a new type of plastic‚ chemistry would be highly important‚ but if you wished to develop a new music genre‚ chemistry would probably be of no importance at all. It is extremely important. That aspirin or tylenol you may take for a headache was made by chemists‚ as are antibiotics‚ and other prescription meds. Not only are chemists in the drug trade‚ but
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