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Most IGCSE subjects offer a choice of tiered examinations: Core or Extended papers (in Cambridge International), and Foundation or Higher papers (in Edexcel). This is designed to make IGCSE suitable for students with varying levels of ability. In some subjects, IGCSE can be taken with or without coursework.
Dihydrolevoglucosenone can be used as a renewable building block to produce valuable chemicals such as drugs, flavours and fragrances and specialty polymers. [8]As dihydrolevoglucosenone is produced as a single enantiomer, it can be used for chiral pool synthesis.
Both Pearson Edexcel and CAIE offer International GCSE qualifications. O-Level qualification has become a replacement for the matriculation qualification (SSC) offered by the Government boards of education. However, due to the high costs associated with IGCSE qualifications, their reach is limited to middle to elite class families.
A woman has been sexually assaulted and six people have been pushed from their bikes by a group of people believed to have been travelling on a moped or motorbike.
Diphenylcarbazide is a white solid that is scarcely soluble in water, [3] but readily soluble in organic solvents like acetone, hot ethanol and acetic acid. [4] It forms colored complex compounds with certain metal ions.
On Dec. 6, the family received a phone call from immigration authorities and they were told to report to an office in Greenspoint, Texas, four days later to discuss Salazar-Hinojosa's case ...
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Periodic tables usually at least show the elements' symbols; many also provide supplementary information about the elements, either via colour-coding or as data in the cells. The above table shows the names and atomic numbers of the elements, and also their blocks, natural occurrences and standard atomic weights. For the short-lived elements ...