Radioactivity is the emission of radiation by unstable atomic nuclei. There are different types of radioactive decay, including alpha decay, beta decay, and gamma decay. Students will learn about the properties of radioactive materials and the effects of radiation on living organisms. Nuclear reactio...
centrenumberandcandidatenumber. Answerallquestions. Answerthequestionsinthespacesprovided –theremaybemorespacethanyouneed. Showallthestepsinanycalculationsandstatetheunits. Somequestionsmustbeansweredwithacrossinabox.Ifyouchange yourmindaboutananswer,putalinethroughtheboxandthenmark yournewanswerwithacross. Inform...