IB DP Chemistry: SL復習筆記3.1.1 The Periodic Table
Structure of the Periodic Table The?periodic table?is a list of all known elements arranged in order of?increasing atomic number,?from 1 to 118. In addition to this, the elements are arranged in su...
IB DP Chemistry: SL復習筆記2.1.6 Energy Levels & Sublevels
Electron Energy Levels Shells The arrangement of electrons in an atom is called the?electronic?configuration Electrons are arranged around the nucleus in?principal energy levels?or?principal quantu...
IB DP Chemistry: SL復習筆記2.1.5 Emission Spectra
Emission Spectra 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 reversible, so electrons can ret...
IB DP Chemistry: SL復習筆記2.1.4 The Electromagnetic Spectrum
The Electromagnetic Spectrum The?electromagnetic spectrum?is a range of?frequencies?that covers all electromagnetic radiation and their respective?wavelengths?and?energy It is divided into bands or...
IB DP Chemistry: SL復習筆記2.1.3 Relative Atomic Mass Calculations
Relative Atomic Mass Calculations 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 sa...
IB DP Chemistry: SL復習筆記2.1.2 Deducing Subatomic Particles
Atoms: Key Terms The?atomic number?(or?proton number) is the number of protons in the nucleus of an atom and has the?symbol?Z The atomic number is also equal to the number of electrons that are pre...
IB DP Chemistry: SL復習筆記2.1.1 The Nuclear Atom
Mass & Charge Distribution The mass of an atom is?concentrated?in the nucleus, because the nucleus contains the heaviest subatomic particles (the neutrons and protons) The mass of the electron ...
IB DP Chemistry: SL復習筆記1.2.9 Titrations
Titrations Volumetric analysis?is a process that uses the volume and concentration of one chemical reactant (a standard solution) to determine the concentration of another unknown solution The tech...
標化可選政策是否可行？2023美本申請季需要提交標化成績嗎？
隨著留學申請人數的不斷增加，競爭也愈發激烈，留學早已陷入內卷不停的怪圈之中，而標化考試絕對算得上是內卷重災區。在疫情爆發的這兩年，許多美國大學對標化的要求從“必須提交”改成“test-optional可選”或是“tes...
