Representing Electric Fields The direction of electric fields is represented by electric field lines Electric field lines are directed from positive to negative Therefore, the field lines mu...
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, ...
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, ...
