EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：4.2.4 Cracking
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OCR A Level Biology:复习笔记1.2.6 Practical: Data loggers & Computer Modelling
Practical: Data loggers & Computer Modelling Data loggers Dataloggers are a tool that allows for the quick and efficient gathering of data This technology can be used for simple data collection...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：4.2.3 Nitrogen Oxides & Sulfur Dioxide
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：4.2.3 Nitrogen Oxides & Sulfur Dioxide Formation of Nitrogen Oxides Nitrogen Oxides These compounds (NO and NO2) are formed when nitroge...
OCR A Level Biology:复习笔记1.2.5 Practical: Investigating Biodiversity Using Sampling
Practical: Investigating Biodiversity Using Sampling Use of sampling techniques in fieldwork Sampling is a method of investigating the abundance and distribution of species and populations There ar...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：4.2.1 Crude Oil & Fractional Distillation
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：4.2.1 Crude Oil & Fractional Distillation Crude Oil & Fractional Distillation Crude oil as a mixture is not a very useful substance ...
OCR A Level Biology:复习笔记1.2.4 Drawing Cells From Blood Smears
Drawing Cells From Blood Smears To record the observations seen under the microscope (or from photomicrographs taken) a labelled biological drawing is often made Biological drawings are line pictur...
OCR A Level Biology:复习笔记1.2.3 Practical: Dissection of Gas Exchange Surfaces in Fish & Insects
Practical: Dissection of Gas Exchange Surfaces in Fish & Insects The safe use of instruments for the dissection of an animal or plant organ Dissections are a vital part of scientific research T...
OCR A Level Biology:复习笔记1.2.2 Practical: Aseptic Techniques
Practical: Aseptic Techniques When investigating the effect of antimicrobial substances on microbial growth it is essential that aseptic (sterile) techniques are used Aseptic techniques ensure the ...
OCR A Level Biology:复习笔记1.2.1 Practical: Ethical Use of Organisms
Practical: Ethical Use of Organisms The safe and ethical use of organisms to measure plant or animal responses or physiological functions When using live animals in biological experiments, care mus...
