13. there are ____________different kinds of element which are found in nature with the rest being ______________-
14, A chemical symbol represent _________
15,The earliest elements discoverd were often given ________ or _________ names.
Element are sometimes named after ___________ like Albert Eindtein or Marie Curie. Newly discoverd element may be named after a _______ , like calfornium . Some elemnt names describe __________ of element Bromine has an upleasent smell and the greek word "bromos" means stench.