A-level 2022年A*率排名前三的科目！
CAIE 2022年A-Level夏季大考A*率終于出爐！和2021年相比，今年高數、生物等科目壓分嚴重，位居A*率榜首的是中文，A*率達到了63.2%。今天我們就來詳細介紹一下2022年A*率排名前三的中文、高數、化學科目~ 一、中文...
Edexcel A Level Chemistry:復習筆記2.3.4 Halide Ion Reactions
Halide Ion Reactions Concentrated sulfuric acid Chloride, bromide and iodide ions react with concentrated sulfuric acid to produce?toxic gases These reactions should therefore be carried out...
Edexcel A Level Chemistry:復習筆記2.3.3 Halogen Redox Reactions
Halogen Redox Reactions Reactions with Group 1 & 2 metals The halogens react with some metals to form?ionic compounds?which are?metal?halide?salts In all reactions where halogens are rea...
Edexcel A Level Chemistry:復習筆記2.3.2 Halogen Displacement Reactions
Halogen Displacement Reactions The reactivity of halogens is also shown by their?displacement?reactions?with other halide ions in solutions A?more?reactive?halogen can displace a?less reacti...
Edexcel A Level Chemistry:復習筆記2.3.1 Group 7 Trends
Physical Properties The Group 7 elements are called?halogens The halogens have uses in water purification and as bleaching agents (chlorine), as flame-retardants and fire extinguishers (brom...
Edexcel A Level Chemistry:復習筆記2.2.5 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 is thus used to identify metal ions by the colour of...
Edexcel A Level Chemistry:復習筆記2.2.4 Group 2 Carbonates & Nitrates
Group 2 Carbonates & Nitrates Thermal decomposition?is the breakdown of a compound into two or more different substances using?heat Thermal decomposition of carbonates The Group 2 carbon...
Edexcel A Level Chemistry:復習筆記2.2.3 Group 2 Hydroxides & Sulfates
Group 2 Hydroxides & Sulfates Group 2 hydroxides Going down the group, the solutions formed from the reaction of Group 2 oxides with water become more?alkaline When the oxides are dissol...
Edexcel A Level Chemistry:復習筆記2.2.2 Reactions of Group 2
Group 2 Elements Reactions with water and oxygen The reaction of group 2 metals with oxygen follows the following general equation: 2M (s) + O2?(g) → 2MO (s) Where M is any metal in group 2 ...
