上海国际学校2023年春季招生开始!
进入9月,时间又快马加鞭来到了国际学校“春招季”,魔都第一校包玉刚、国际学校天花板常熟UWC及其姊妹校CWA世华打响了头炮,上海国际学校已经纷纷宣布开启2023年的春季招生及入学申请,紧接着,又有一大波国际化学...
进入9月,时间又快马加鞭来到了国际学校“春招季”,魔都第一校包玉刚、国际学校天花板常熟UWC及其姊妹校CWA世华打响了头炮,上海国际学校已经纷纷宣布开启2023年的春季招生及入学申请,紧接着,又有一大波国际化学...
08月23日,教育部宣发面向中小学生的全国性学术活动活动名单,名单中共列举出45项学术活动汇总,“自然科学素养类”高达23项!在自然科学素养类比赛中,人工智能、STEM领域赛事占比明显高出其他学科。科研类学术活动...
SIC S7赛季全球站已经落下帷幕啦! 翰林学员传来喜讯, 目前已经收获4金2铜! *截止发稿前统计,持续更新中 2022战绩 SIC中学生投资挑战 全球站 翰林学员W同学、L同学所在团队获得 3枚金奖 2枚铜奖 投资杰出团...
聊到美国大学排名,家长们的第一印象就是U.S. News或QS。 但由于近年来数据造假的丑闻,U.S. News排名陷入了不少争议,其准确性和合理性也遭到了一定的质疑。 《Washington Monthly(华盛顿月刊)》就打着和U.S. ...
Yield & Atom Economy Percentage yield In a lot of reactions, not all reactants react to form products which can be due to several factors: Other reactions take place simultaneously The r...
Error & Uncertainty An error is the difference between a value or quantity obtained in an experiment and an accepted or literature value for an experiment There are two types of errors i...
Titration Calculations Volumetric Analysis Volumetric analysis is a process that uses the volume and concentration of one chemical reactant (standard solution) to determine the concentration...
Reacting Volume Calculations Reacting volume calculations are commonly associated with the reactions of gases All gases occupy the same volume under the same conditions At room temperature a...
Amount of Substance Calculations As previously discussed, the amount of substance can be defined as the number of particles in a substance, n, measured in moles (often abbreviated to mol) In...
The Mole & Avogadro The Avogadro constant (NA or L) is the number of particles equivalent to the relative atomic mass or molecular mass of a substance The Avogadro constant applies to at...
Relating Observations to Chemical Equations Chemical equations give information about the reaction that is taking place Balanced equations show the number of particles participating in the r...
Writing Balanced Equations A symbol equation is a shorthand way of describing a chemical reaction using chemical symbols to show the number and type of each atom in the reactants and product...
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