SYLLABUS Cambridge O Level Chemistry 5070 For examination in June and November 2014 University of Cambridge International Examinations retains the copyright on all its publications. Registered Centres are permitted to copy material from this booklet for their own internal use. However‚ we cannot give permission to Centres to photocopy any material that is acknowledged to a third party even for internal use within a Centre. © University of Cambridge International Examinations 2011 Contents
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1. Make our life simpler. 2. It helps us to organize our daily activities. 3. Our job can be done faster. 4. Easier to communicate with other people. 5. Helps us to know and understand other culture and society better. Less work for humans. -Makes life more enjoyable. -More effectiveness in doing some things. -Ability to discover more new things. -Medicines easier to synthesise. -Faster to do some jobs. * You get to know more about the world around you. * More species would be discovered
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enough for our life? Nowadays‚ the problem of global warming in all around the earth became more serious. In other countries‚ the iceberg keeps melt because of the global warming causes the temperature of earth increase. So‚ in order to save our environment‚ one of the important ways we can do to save the environment is using green energy. Green energy is the energy that produces little products but no harming the environment. We think that the green energy will supplies enough for our life. There
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How to Recover Deleted/Lost Data from Integral Ultima Pro-X2 Memory Card Integral Ultima Pro-X2 Memory Card Integral Ultima Pro-X2 Memory Card is a professional-grade memory card‚ ideal for high end DSLRs and compact cameras. These memory cards are the best choice for cameras and camcorders that record 4K‚ 3D and full HD content. Their high speed‚ excellent performance and durability makes them the choice of professionals all over. The Integral Ultima Pro-X2 Memory Card range of memory cards is enabled
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changed our world in many aspects and through many different inventions and advances. Technology has changed our world in mainly two aspects‚ our physical environment and our way of life. Our physical environment is defined as the buildings‚ the infrastructure around us. For example‚ the trains and cars we see every day‚ the air-conditioners present in buildings and such. Our way of life is how we actually go about doing activities; the way we deal with matters. Technology has changed our physical
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Name: __________________________________ ( ) Class: 4Q HWA CHONG INSTITUTION PRELIMINARY EXAMINATION 2010 CHEMISTRY 5072 Paper 1 Time: 1 hour INSTRUCTIONS TO CANDIDATES Do not turn the pages over until you are told to do so. Write your name and index number on the answer sheet in the spaces provided. There are forty questions on this paper. Attempt all questions. For each question‚ there are four possible answers labelled A‚ B‚ C and D. Choose the one you consider correct and
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To What Extent Does the Media Dictate our Life today? For most people‚ the first thing that they do in the morning just after they wake up would be to check their Facebook. They will view all the notifications first before doing anything else. Such is the situation today where people are very dependent on Social media. Media can be classified into two main types old and new media. Where the old media consist mainly of newspaper while the new media consists of the television and the social media
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Amoxicillin Amoxicillin is a penicillin antibiotic. It fights bacteria in your body. Amoxicillin is used to treat many different types of infections caused by bacteria‚ such as ear infections‚ bladder infections‚ pneumonia‚ gonorrhea‚ and E. coli or salmonella infection. Amoxicillin is also sometimes used together with another antibiotic called clarithromycin (Biaxin) to treat stomach ulcers caused by Helicobacter pylori infection. This combination is sometimes used with a stomach acid reducer
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medium and K2 CO3 as base/catalyst at an elevated temperature are exclusively thiazolidine-2‚4-diones and not thiohydantoins as has been reported. The core unit thiazolidine-2‚4-dione is essentially derived from chloroacetylchloride and the thioamidic part of the phenylthiourea. The scope of this unprecedented transformation has been evaluated with electron-rich and electron-poor phenylthioureas. O O O H N S N Cl Cl K2CO3 (5 mol %) PEG-400‚ 80 oC X Cl S X H N
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purpose of this experiment is to see if the balloon pops when pierced with a wooden skewer or a sharp pin. Hypothesis: If we lubricate the skewer with petroleum jelly‚ then it should go through the balloon without popping. Hypothesis for the 2nd part of the Lab: If we cover the side of the balloon with cellophane tape‚ then it will not pop when pierced with the pin. Materials: • Balloons • Long wooden skewer • Petroleum jelly • A sharp pin • Cellophane tape • A pencil • Paper Pre-Lab
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