Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.3.2 Calculate Relative Atomic Mass Calculate Relative Atomic Mass The relative atomic mass of each element is calculated from the mass number and relative abundan...
Coulomb's Law All charged particles produce an electric field around it This field exerts a force on any other charged particle within range The electrostatic force between two charge...
Trigonometric Equations: sinx = k How are trigonometric equations solved? Trigonometric equations can have an infinite number of solutions For an equation in sin or cos you can add 360° or 2π to ea...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.3.1 Atoms: Definitions & Structure Atoms & Molecules It is important to understand the terms atom and molecule when referring to atomic structure, ...
根據(jù)英國教育部規(guī)定，GCSE課程分為“必修”和“選修”兩部分，必修課程包括數(shù)學(xué)、英語和科學(xué)(物理、化學(xué)、生物)，“選修”課程的覆蓋范圍廣、種類多樣，可滿足不同學(xué)生的需要。英國也有“中考分流”說？提高GCSE英語和數(shù)...
Relationship Between Trigonometric Ratios What relationships between trigonometric ratios should I know? If you know a value for one trig ratio you can often use this to work out the value for the ...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.2.5 Practical: Investigating Paper Chromatography Practical: Investigate Paper Chromatography Using Inks & Food Colourings Objective: Investigate how paper ch...
Synchronous Orbits A synchronous orbit is: When an orbiting body has a time period equal to that of the body being orbited and in the same direction of rotation as that body These usually re...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.2.4 Interpreting Chromatograms Identifying Mixtures Pure substances will produce only?one spot?on the chromatogram If two or more substances are the same, ...
