IB DP Physics: SL复习笔记1.1.2 Using Scientific Notation
Scientific Notation & Metric Multipliers Scientific Notation In physics, measured quantities cover a large range from the very large to the very small Scientific notation is a form that is base...
IB DP Physics: SL复习笔记1.1.1 SI Units
SI Base Quantities International System (S.I.) Units There is a seemingly endless number of units in Physics These can all be reduced to seven base units from which every other unit can be derived ...
IB DP Chemistry: SL复习笔记11.2.6 Analysing Graphs
Analysing Graphs The gradient of a graph can be found by: In the case of a straight line graph: using a triangle and the equation for a straight line In the case of a curve: drawing a tangent to th...
IB DP Chemistry: SL复习笔记11.2.5 Drawing Graphs
Drawing Graphs General guidance on drawing graphs Graphs need to have: Clear title Labelled axes Units on the axes Appropriate linear scales without any jumps This means the plotted graph must occu...
IB DP Chemistry: SL复习笔记11.2.4 Percentage Error
Percentage Error Percentage error is used to express the difference between a final calculated answer and an accepted or literature value It is calculated using the following formula You should be ...
IB DP Chemistry: SL复习笔记11.2.3 Reducing the Impact of Errors
Reducing Errors Random errors can be reduced by repeated trials and measurements Multiple measurements when averaged will reduce the impact of a random error on the average The more readings you ha...
IB DP Chemistry: SL复习笔记11.2.2 Processing Errors
Types of Errors An error is the difference between a value or quantity obtained in an experiment and an accepted or literature value for an experiment There are two types of errors in experiments, ...
IB DP Chemistry: SL复习笔记11.2.1 Recording Data
Qualitative & Quantitative data When recording results of experiment, both quantitative and qualitative data should be obtained Quantitative data is obtained from measurements whereas qualitati...
IB DP Chemistry: SL复习笔记11.1.4 Infrared Spectroscopy
How IR Spectroscopy works All covalent bonds act rather like springs, as opposed to rigid bars Like springs, the bonds can vibrate in a number of different ways The frequency of vibration occurs in...
