2022IB大考成績報告出爐！IB全球均分、通過率下滑明顯
不久前，IBO國際文憑組織（International Baccalaureate Organization，簡稱IBO）發(fā)布了2022年5月場次的全球IBDP & CP 大考及學校評估成績的暫定數(shù)據(jù)簡報（Provisional statistical bulletin），其中包含了考...
Edexcel A Level Chemistry:復習筆記5.1.1 Deducing Kp Expressions
Kp Expressions We have seen previously that equilibrium reactions can be quantified by reference to an equilibrium expression and equilibrium constant The?equilibrium expression?links the?eq...
Edexcel A Level Chemistry:復習筆記4.2.4 Qualitative Analysis
Core Practical 7: Analysis of Inorganic and Organic Unknowns Test Tube Reactions Simple test tube reactions can be done to identify the following ions: Ammonium ions (NH4+) Halide ions (X-) ...
Edexcel A Level Chemistry:復習筆記4.2.3 Chlorination of 2-Methylpropan-2-ol
Core Practical 6: Chlorination of 2-Methylpropan-2-ol Synthesis of a haloalkane from an alcohol Measure 8 cm3?of 2-methylpropan-2-ol in a measuring cylinder Pour the 2-methylpropan-2-ol into...
Edexcel A Level Chemistry:復習筆記4.2.2 Ethanol Oxidation
Core Practical 5: Oxidation of Ethanol Oxidation of ethanol Primary alcohols can be oxidised to form?aldehydes?which can undergo further oxidation to form?carboxylic?acids When ethanol is ox...
Edexcel A Level Chemistry:復習筆記4.2.1 Hydrolysis of Halogenoalkanes
Core Practical 4: Investigating Halogenoalkane Hydrolysis Halogenoalkanes can be?hydrolysed?with an?aqueous?solution of sodium hydroxide (NaOH) or potassium hydroxide (KOH) This reaction is ...
Edexcel A Level Chemistry:復習筆記4.1.4 Determining Enthalpy Change of Reaction
Core Practical 8: Determining Enthalpy Change of Reaction Measuring enthalpy changes Calorimetry?is a technique used to measure changes in enthalpy of chemical reactions A?calorimeter?can be...
Edexcel A Level Chemistry:復習筆記4.1.3 Determining Concentrations
Core Practical 3: Hydrochloric Acid Concentration Performing the Titration The key piece of equipment used in the titration is the burette Burettes?are usually marked to a precision of 0.10 ...
Edexcel A Level Chemistry:復習筆記4.1.2 Standard Solutions
Core Practical 2: Preparing a Standard Solution Volumetric Analysis Volumetric analysis?is a process that uses the volume and concentration of one chemical reactant (a volumetric solution) t...
