Reaction Mechanisms: Terminology Homolytic & Heterolytic fission Homolytic fission?is breaking a covalent bond in such a way that each atom takes an electron from the bond to form two ra...
Test-Tube Reactions Often, chemists will need to identify the functional groups present in an organic compound Some simple questions which can be considered are: Is the compound acidi...
Classification of Alcohols Primary?alcohols?are alcohols in which the carbon atom bonded to the -OH group is attached to?one?other carbon atom (or alkyl group) Secondary?alcohols?are alcohol...
澳洲的IT專業碩士值得讀嗎？現今越來越多的留學生選擇去澳大利亞攻讀 IT 專業 碩士 ，澳洲在計算機領域有著極高的水平，澳洲在 2007 年的總理選舉中成功實現網絡選舉，像大家現在用的 WIFI ，無限網絡就是澳大利...
Shapes & Bond Angles in Organic Molecules Each carbon atom has four electrons in its outer shell (electronic configuration: 1s22s22p2) Carbon atoms share these four electrons in four cov...
Edexcel IGCSE Maths復習筆記 1.10.1 Rounding & Estimation Why use estimation? We?estimate?to find approximations for difficult sums Or to check our answers are about the right size (right order ...
又到一年畢業季。 對于留學生來說，回國的第一件事就是要將自己的海外學歷進行認證，它不僅是找工作的必備材料，也是享受留學回國政策的一大憑證！ 最近，教育部留學服務中心發布了最新的海外學歷認證規范通知。...
UKChO 英國化學奧林匹克學術活動（UK Chemistry Olympiad）由英國皇家化學學會主辦。英國皇家化學會是全球具有非凡影響力的化學學術組織之一，匯聚來自世界各地的化學科學家。英國化學奧林匹克學術活動中的試題會...
Reactivity of Halogenoalkanes The halogenoalkanes have different?rates?of?substitution?reactions Since substitution reactions involve?breaking?the?carbon-halogen?bond the?bond?energies?can b...
Fractional Distillation Crude oil is currently the world's main source of organic chemicals As a mixture, it isn’t a very useful substance, but the different hydrocarbons that make up the mixture, ...
Organic Definitions & Terminology Organic chemistry?is the chemistry of carbon compounds Carbon forms a vast number of compounds because it can form strong covalent bonds with itself This enabl...
Group 7: Physical Properties The group 7 elements are called?halogens The halogens have uses in water purification and as bleaching agents (chlorine), as flame-retardants and fire extinguish...
