In which two types of reactions do opposite chemical changes occur? double replacement and combustion
single replacement and double replacement
synthesis and decomposition
combustion and synthesis

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Air can be considered a mixture. which statement does not explain why?

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.