WebThe GCSE units have been written to satisfy the specification for the separate Chemistry 8462 and Trilogy 8464 specification for the new AQA 9-1 GCSEs. Each unit contains: … Web1 2 Free radicals Free radicals are highly reactive atoms that have one unpaired electron. They are unstable as there is a tendency for unpaired electrons to pair up and so the free radicals...

Distillation - Separation and purification - BBC Bitesize

WebMolten lead bromide, PbBr 2 (l), is an electrolyte. During electrolysis: Pb 2+ ions gain electrons at the cathode and become Pb atoms; Br-ions lose electrons at the anode and become Br atoms ... WebOrganic chemistry Revise Video New Test Crude oil, hydrocarbons and alkanes test questions - AQA Trilogy 1 Which of the following is an alkane? Butene Hexanol Pentane … nisshin wood products

Alkenes - More organic chemistry - AQA - BBC Bitesize

Webthe formula of methane is CH4 the relative atomic mass (Ar) of C = 12 the Ar of H = 1 so the relative formula mass (Mr) of CH4 = 12 + (4 × 1) = 16 so 1 mole of methane = 16 g of … WebAn organic chemical contains the element carbon. There are four different homologous series of organic compounds discussed here: alkanes, alkenes, alcohols and carboxylic acids. Part of... WebThe empirical formula of a compound is the simplest, whole number ratio of atoms of each element in a compound. The molecular formula shows the actual number of atoms of each element present in a ... nissho group