A scientist adds different ammounts of salt to 5 bottles of water. She then measures how long it takes for the water to boil. What is the responding variable in this experiment? a. The brand of salt used b. The amount of salt added to the water c. The time it takes for the water to boil d. The kind of bottles used

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.