EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 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 substanc...
Polymerase Chain Reaction Every person, with the exception of identical twins,?has a?unique DNA sequence?which can be used to create a?DNA profile This is very useful in forensic science as it prov...
Micro-organisms: Decomposition & Nutrient Recycling Dead plants and animals are?broken down?by microorganisms such as?bacteria?and?fungi These organisms are known as decomposers These decompose...
Determining the Time of Death Forensics?is the use of science in the?investigation of criminal activities It involves the?collection and analysis of evidence?from a potential crime scene e.g. the s...
IG化學(xué)作為國際課程的基礎(chǔ)課程之一，目的是為了幫助國際學(xué)生在科學(xué)學(xué)習(xí)方面奠定一定的基礎(chǔ)。現(xiàn)如今也是最好的銜接美國，英高，加高，以及國內(nèi)國際學(xué)校的化學(xué)課程。那么IG化學(xué)課程有哪些知識(shí)點(diǎn)？（內(nèi)含2022真題解...
Evidence of Evolution & the Scientific Community The theory of?evolution?by?natural selection?is now?widely accepted?by the scientific community?due to its being supported by a great deal of?ev...
Speciation The?theory of evolution?states that?species?do not stay the same, but change over time; this can lead to the process of?speciation Speciation can be defined as?the development of new spe...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復(fù)習(xí)筆記：1.2 3 Separation Techniques 、 Simple Distillation This is used to separate a liquid and?soluble solid?from a solution (e.g., water from a s...
Evolution by Natural Selection Species?do not stay the same over time; the species that we see around us today have developed over millions of years This process of species change is known as?evolu...
