2022《哈佛国际评论》写作报名倒计时!助力ED申请!
《哈佛国际评论》学术写作挑战 秋季赛报名倒计时 Harvard International Review Academic Writing Competition 适合学生 全球9~12年级中学生,接受2人合作投稿 参赛时间(秋季赛) ● 报名截止时间:2022年11月15...
《哈佛国际评论》学术写作挑战 秋季赛报名倒计时 Harvard International Review Academic Writing Competition 适合学生 全球9~12年级中学生,接受2人合作投稿 参赛时间(秋季赛) ● 报名截止时间:2022年11月15...
Biochemical Tests: Reducing Sugars & Starch Benedict’s solution can be used to carry out a semi-quantitative test on a reducing sugar solution to determine the concentration of reducing sugar p...
Practical: Factors Affecting Membrane Structure & Permeability The permeability of cell membranes is affected by different factors or conditions, such as: Temperature Solvent concentration &nbs...
Practical: Investigating Water Potential Practical 1: Investigating water potential using potato cylinders It is possible to investigate the effects of immersing plant tissue in solutions of differ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.5.2 Disposal of Addition Polymers Disposal of Addition Polymers Addition polymers are formed by the joining up of many small molecules wit...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.5.1 Addition Polymers Monomers Polymers are large molecules of high relative molecular mass and are made by linking together large numbers...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.4.2 Bromine & Alkenes Bromine & Alkenes Alkenes are a homologous series of hydrocarbon compounds with at least one double bond bet...
近日官网更新了数学&化学的半决赛入围名单,至此北美赛区完整的半决赛入围名单已新鲜出炉!让我们来看看吧! 点我查看丘奖总决赛-内地赛区入围名单👆 根据官网赛程安排,入围的学生将于11月19日参与半...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.3.2 Halogens & Alkanes Halogens & Alkanes In a substitution reaction, one atom is swapped with another atom Alkanes undergo a subs...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.3.1 Alkanes The Alkanes Alkanes are a group of saturated hydrocarbons The term saturated means that they only have single carbon-carbon bo...
Practical: Investigating the Rate of Diffusion Recording a range of quantitative measurements It is important to use appropriate apparatus when recording a range of quantitative measurements Quanti...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:4.2.4 Cracking Cracking Saturated molecules contain single bonds only whereas unsaturated molecules contain double bonds between their carbo...
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