2023年AP课程理科专业考试报名开启！AP社会考生报名火热咨询中
2023年AP课程理科专业考试报名开启！不要错过这次的机会！尤其是社会考生！想要冲刺理科院校和专业，除了基础的微积分、物理、化学以外，统计学也很重要。 首先我们看一下理科方向的科目： AP微积分 AP统计学 AP...
2023年AP物理C电磁学课程报名开启！中国大陆AP社会考生报名进行中
2023年AP物理C电磁学课程报名开启！不要错过这次的机会！尤其是社会考生！AP物理C：电磁学 是完成AP物理C：力学之后的半年课程，相当于大学一学期含微积分的物理基础课程。 AP物理C电磁学的课程内容以及考试占比...
泰晤士报2023年英国大学最新排名发布！
9月16日，英国杂志The Times&The Sunday Times（《泰晤士报》与《星期日泰晤士报》）发布了 Times 2023年英国大学最新排名（Good University Guide 2023）！ 图源｜the times 《泰晤士报》（The Times）是英...
Edexcel A Level Chemistry:复习笔记5.2.6 Titration Curves
Drawing & Interpreting Titration Curves During a titration a pH meter can be used and a pH curve plotted A pH curve is a graph showing how the pH of a solution changes as the acid (or ba...
Edexcel A Level Chemistry:复习笔记5.2.5 Measuring and Comparing pH
Measuring and Comparing pH Strong and weak acids The relative strengths of different acids can be determined by measuring the pH of equimolar aqueous solutions of the acids, at the same temp...
Edexcel A Level Chemistry:复习笔记5.2.4 Ionic Product of Water
Ionic Product of Water, Kw In all aqueous solutions, an equilibrium exists in water where a few water molecules dissociate into protons and hydroxide ions We can derive an equilibrium consta...
Edexcel A Level Chemistry:复习笔记5.2.3 Acid Strength
Acid Dissociation Strong acids A strong acid is an acid that dissociates almost completely in aqueous solutions HCl (hydrochloric acid), HNO3 (nitric acid) and H2SO4 (sulfuric acid) The posi...
Edexcel A Level Chemistry:复习笔记5.2.2 pH
Defining pH The acidity of an aqueous solution depends on the number of H+ ions in solution The pH is defined as: pH = -log[H+] where [H+] is the concentration of hydrogen ions in mol dm–3 S...
Edexcel A Level Chemistry:复习笔记5.2.1 Brønsted–Lowry Acids & Bases
Brønsted–Lowry Acid & Base Theory The Brønsted-Lowry Theory defines acids and bases in terms of proton transfer between chemical compounds A Brønsted acid is a species that can donate a ...
