exam topics Year 7 Revision Booklet - Summer Term 2013 |Day | Saturday 15th June |Sunday 16th June |Monday 17th June |Tuesday 18th June |Wednesday 18th June | |Morning exams |English |Arabic |chemistry |French |math’s | |Afternoon exams |biology |history |geography |physics
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In this lab‚ we were able to determine measuring the pH of liquids work. We were able to compare the liquids based on their pH level and determine which liquid was acidic or basic. Our results showed that if something came out to be seven or less‚ according to the pH scale‚ it means that an acid is a substance that donates hydrogen ions. Because of this‚ when an acid is dissolved in water‚ the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide
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Name: _____________________ Date: _____________ Student Exploration: pH Analysis Vocabulary: acid‚ acidic‚ alkaline‚ base‚ indicator‚ neutral‚ pH Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Acids are substances that produce hydrogen ions (H+) when dissolved in water. Lemon juice is an example of an acid. A. What does lemon juice taste like? __Sour.______________________________ B. What does it feel like if lemon juice gets in your eye? ___It
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The effects of pH on mung beans Gloria Cheng Winsy Cheung Lily Wong Christine Yen January 15‚ 1998 Abstract This experiment explores how different pH environments affect the growth of mung beans. The mung beans were grown in water with various pH levels‚ consisted of pH levels 5‚ 6‚ 7‚ 8‚ and 9. A replicated design was used consisting of 3 runs for each pH level. The following results are listed in order of pH levels allowing most growth to least growth of the mung beans: 7‚ 8‚ 6‚ 5‚ and 9. These
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for the pH concentration experiment were put together by using a 10ml-graduated cylinder to obtain 4ml of each pH buffer to insert into cuvettes‚ a micropipette was then used to obtain 0.5ml of catechol and 0.5ml of the catechol oxidase. The pH buffer was made first to avoid any denaturation of the catechol oxidase. Our positive control for this experiment was pH 7 because that is the pH level of most cell membranes in the cytoplasm (Whitson‚ 2016.) Our negative controls varied for each pH buffer
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南京师范大学2014-2015学年第一学期 金陵女子 学院 传媒英语 专业 2012 年级 英语词汇学 课程期末试卷（A） 班 级： 1207班 任课教师： 王海波 学 号： 16120707 姓 名： 孙洁 总分 A Probe into Sexism in English Vocabulary Based on Corpus [内容摘要]很多词汇学家认为英语是一门性别歧视语言，其中很多单词在特定的上下文环境下可以显示出明显的性别歧视现象。下文将在语料库研究数据的基础上，从性别歧视的概念和理论，词汇中性别歧视现象和成因，以及性别词汇的发展和未来趋势等几个方面进行分析。 [关键词]sexism，性别歧视；factors，成因； word frequency，词频；corpus，语料库 1. Introduction In a broad sense‚ language covers all the shapes and whole scope in cultural life‚ which
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Research Topic: The effect of advertising to the sales of a mid-class restaurant Research Question: How will advertising affect the sales in a mid-class restaurant? 1. Does Current Advertising Cause Future Sales? Evidence from the Direct Mail Industry http://ebusiness.mit.edu/research/papers/222_Brynjolfsson_Advertising_Future_Sales.pdf 2. The Impact of Advertising on Sales Volume of a Product http://www.theseus.fi/bitstream/handle/10024/34928/Adekoya_Olusola.pdf.pdf 3. Does Retail Advertising
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Question: Effects of pH on amylase activity Introduction: Amylase is an enzyme that is in human’s saliva as well as the pancreas. Enzymes are biological catalysts that speed up a chemical reaction. They break down complex molecules into simple ones. In this case‚ amylase converts starches (complex molecule) into simple sugars. That is why foods like potatoes for example‚ may taste sweet to us‚ because they contain starch. The optimum pH for pancreatic amylase is the pH of 7. In the experiment
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Principles of Cleaning and Sanitizing: Cleaning and Sanitizing are two distinct processes used for very different purposes. Cleaning is the physical removal of soil and food residues from surface of equipment and utensils. Sanitizing is the treatment of a surface that has been previously cleaned to reduce the number of disease-causing microorganisms to safe levels. The equipment and supplies used for cleaning are different from those used for sanitizing. Removal of Food Particles: Scrape and flush
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ESL Argument Topic Are we too dependent on internet? Nowadays‚ more and more people depend very heavily on the internet because of studying‚ working and living. Internet has become one of most important parts in modern life. As the outstanding achievements of modern science and technology revolution‚ the rapid development of internet into the various domains of society. The internet changed human living mode. The internet is advantageous because of it lets us search the information‚ shop and
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