CHEMISTRY FINAL EXAM

CHEMISTRY FINAL EXAM The alkaline-earth metals _________ have an oxidation number of +2 in compounds... - correct answer -Always Which one of these elements has only one possible oxidation state? - correct answer -Lithium A covalently bonded group of atoms that carries a charge is a... - correct answer -Polyatomic ion The Greek prefix penta- means... - correct answer -5 Name the following compound: P2O5 - correct answer -Diphosphorus pentoxide Compounds consisting of one metal and one nonmetal are called... - correct answer -Binary ionic compounds What is the proper name for Al2O3 ? - correct answer -Aluminum oxide What is the chemical formula for carbon disulfide? - correct answer -CS2 What is the chemical formula for sodium iodide? - correct answer -NaI Choose the name for the chemical formula CaCl2 - correct answer -Calcium chloride Choose the name for the chemical formula N2O3 - correct answer -Dinitrogen trioxide Which of the following does NOT represent a function of a balanced equation? - correct answer - Indicates the mass of products and reactants Choose the correctly balanced equation __NH3 + __O2 ———> __H2O + __NO2 - correct answer -4NH3 + 7O2 ———> 6H2O + 4NO2Choose the correctly balanced equation __Ag + __H2S + __O2 ———> __Ag2S + H2O - correct answer -4Ag + 2H2S + O2