2022-23Future City未來之城展評活動開啟-注冊報名-活動時間-注冊須知
全球極具影響力的PBL+STEAM教育項目之一 至今已有 30?年歷史 全球2000+?學校、45000+?人參與 美國工程師周基金會主辦 獲獎團隊受邀到白宮接受總統嘉獎 基于科學和技術設計100年后的未來城市 什么是未來之城? 未來...
Edexcel A Level Chemistry:復習筆記1.2.4 Electronic Configurations
Electronic Configurations of Atoms & Ions The?principal quantum shells?increase in energy with increasing?principal quantum number E.g.?n?= 4 is higher in energy than?n?= 2 The?su...
Edexcel A Level Chemistry:復習筆記1.2.3 Orbitals
Orbital Shapes Orbitals Subshells contain one or more?atomic orbitals Orbitals exist at?specific?energy levels and electrons can only be found at these specific levels,?not?in between them E...
Edexcel A Level Chemistry:復習筆記1.2.2 Quantum Shells
Developing Electronic Configuration Electrons move rapidly around the nucleus in energy shells If their energy is increased, then they can jump to a higher energy level The process is revers...
Edexcel A Level Chemistry:復習筆記1.2.1 Ionisation Energy
Factors Affecting Ionisation Energy Ionisation energy The?ionisation?Energy?(IE) of an element is the amount of energy required to remove?one mole?of electrons from?one mole?of gaseous atoms...
Edexcel A Level Chemistry:復習筆記1.1.4 Mass Spectrometry
Interpreting Mass Spectra Isotopes are different atoms of the same element that contain the same number of protons and electrons but a different number of neutrons These are atoms of the sam...
Edexcel A Level Chemistry:復習筆記1.1.3 Relative Mass
Isotopic & Atomic Mass The relative mass of an atom uses the carbon-12 isotope as the international standard One atom of carbon-12 has an accepted mass of 1.992646538 x 10-26?kg It is not reali...
Edexcel A Level Chemistry:復習筆記1.1.2 Isotopes
Atomic Structure Calculations An atom is?neutral?and has no overall charge Ions on the other hand are formed when atoms either?gain?or?lose?electrons, causing them to become?charged The numb...
Edexcel A Level Chemistry:復習筆記1.1.1 Structure of the Atom
Structure of the Atom All matter is composed of?atoms, which are the smallest parts of an element that can take place in?chemical reactions Atoms are mostly made up of?empty?space?around a v...
