Separation of Variables What is separation of variables? Separation of variables can be used to solve certain types of first order differential equations If the equation is in that form you can use...
Edexcel IGCSE Chemistry 复习笔记 3.1.2 Calorimetry Calorimetry Calorimetry is a technique used to measure changes in enthalpy of chemical reactions There are two types of calorimetry experim...
Edexcel IGCSE Chemistry 复习笔记 3.1.1 Exothermic & Endothermic Exothermic & Endothermic The changes in heat content can be determined and measured with a thermometer Note that the o...
Edexcel IGCSE Chemistry 复习笔记 2.8.5 Tests for Water Tests for Water Water can be identified using a chemical test and/or a physical test Chemical test for water Anhydrous copper(II...
全美历史最悠久、最负盛名、有中学生“小诺奖”的科研赛事再生元科学天才奖Regeneron STS ，相信不少美高学生对它并不陌生。 STS为未来STEM领域的领航者提供了一个国际的舞台，这里汇聚了全美最优秀、最聪明的年轻...
First Order Differential Equations What is a differential equation? What is a first order differential equation? A first order differential equation is a differential equation that contains first d...
Edexcel IGCSE Chemistry 复习笔记 2.8.4 Tests for Anions Tests for Anions Testing for Anions Table Exam Tip When it comes to qualitative inorganic an...
Adding & Subtracting Volumes When would volumes of revolution need to be added or subtracted? How do I know whether to add or subtract volumes of revolution? How do I solve problems involving a...
Edexcel IGCSE Chemistry 复习笔记 2.8.3 Tests for Cations Tests for Cations Metal cations in aqueous solution can be identified by the colour of the precipitate they form on addition o...
Edexcel IGCSE Chemistry 复习笔记 2.8.2 Flame Tests Flame Tests Metal ions produce a colour if heated strongly in a flame Ions from different metals produce different colours The flame test i...
Edexcel IGCSE Chemistry 复习笔记 2.8.1 Tests for Gases DOWNLOAD PDF Tests for Gases Many reactions in the lab produce gases which then need to be tested The table below indicates the ...
Area Between Curve & y-axis What is meant by the area between a curve and the y-axis? How do I find the area between a curve and the y-axis? Exam Tip Worked Example Volumes of Revolution...
