Which statement best describes a physical change? A:Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same. B:Changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same. C: Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same. D:Changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.

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.