2022年IG化學部分真題解析！
截至目前，2022年夏季大考的成績都出來了。根據Ofqual官方數據，今年參加IGCSE/GCSE考試的同學又有所增加，共有5349250人報名參加GCSE夏季大考。 2022年IGCSE整體成績趨勢 今年整體成績要比去年低?；叵脒^去兩年...
Edexcel A Level Chemistry:復習筆記1.7.1 Reacting Volume Calculations
Reacting Volume Calculations Reacting volume calculations are commonly associated with the reactions of gases All gases occupy the same volume under the same conditions At room temperature a...
Edexcel A Level Chemistry:復習筆記1.6.5 Amount of Substance Calculations
Amount of Substance Calculations As previously discussed, the amount of substance can be defined as the number of particles in a substance,?n, measured in moles (often abbreviated to mol) In...
Edexcel A Level Chemistry:復習筆記1.6.4 The Mole & the Avogadro Constant
The Mole & Avogadro The?Avogadro constant?(NA?or?L) is the number of particles equivalent to the relative?atomic?mass?or?molecular mass?of a substance The Avogadro constant applies to at...
Edexcel A Level Chemistry:復習筆記1.6.3 Applying Equations
Relating Observations to Chemical Equations Chemical equations give information about the reaction that is taking place Balanced equations show the number of particles participating in the r...
Edexcel A Level Chemistry:復習筆記1.6.2 Balanced Equations
Writing Balanced Equations A?symbol?equation is a shorthand way of describing a chemical reaction using?chemical symbols?to show the number and type of each atom in the reactants and product...
Edexcel A Level Chemistry:復習筆記1.6.1 Empirical & Molecular Formulae
Empirical & Molecular Formula Definitions The?molecular?formula?is the formula that shows the?number?and?type?of each atom in a molecule E.g. the molecular formula of ethanoic acid is C2...
Edexcel A Level Chemistry:復習筆記1.5.8 Predicting Structures
Predicting Structure & Bonding Different types of?structure?and?bonding?have different effects on the?physical properties?of substances such as their?melting?and?boiling points,?electric...
Edexcel A Level Chemistry:復習筆記1.5.7 Covalent Structures
Simple Molecular Compounds Simple Molecular Compounds Covalent substances tend to have small molecular structures, such as Cl2, H2O or CO2 These small molecules are known as?simple molecules...
