^{4}\textrm{He}\) and is also sometimes written as \(_{2}^{4}\textrm{\alpha}\) A beta particle has a relative mass of zero, so its mass number is zero. As the beta particle is an ...

Advance information of exam content will no longer be provided, but students taking GCSE maths, physics and combined science will have formulae and equation sheets. Qualification Wales has said ...

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial ...

Stage 2 extends your knowledge of Chemical Engineering subject matter, building depth in the areas of thermodynamics and heat and mass transfer and providing ... Representing chemical data; linear ...